How is modern day Christian morality reconciled with the morality of the Bible?

1) We understand the bible better

Take the Reformation. It's easy to believe that the average Christian had a better understanding of the Bible, on the biblical record on grace, 100 years after the Reformation than 100 years before. Few would argue that the bible changed or that the breakthrough came when we decided to throw out outdated passages. The one thing that really changed was our understanding of how it all fits together.

2) Look more closely at human nature described in scripture.

In Romans 3, Paul decribes human nature. It applies to everyone, heathen or saved, 40 A.D., 1400 A.D., or today.

“There is no one righteous, not even one; there is no one who understands; there is no one who seeks God. All have turned away, they have together become worthless; there is no one who does good, not even one. Their throats are open graves; their tongues practice deceit. The poison of vipers is on their lips. Their mouths are full of cursing and bitterness. Their feet are swift to shed blood; ruin and misery mark their ways, and the way of peace they do not know. There is no fear of God before their eyes.”

3) Look more closely at current events.

The Wikipedia article on "contemporary slavery" says "[S]lavery is prevalent in many forms today, all over the world." It's been said there are more slaves in the US now than in the 1860's.

4) Look more closely at which verses demand primacy over others.

There are events in the Old Testament that are kind of hard to explain in today's mores (Joshua 6:41). But is there any command in Scripture that DEMANDS we take Joshua 6:41 as the PRIMARY passage we turn to in forming our ethics? No. I have collected these verses which themselves claim to have priority.

• 2nd Greatest Commandment "Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ This is the first and greatest commandment. And the second is like it: ‘Love your neighbor as yourself.’ All the Law and the Prophets hang on these two commandments.” Matthew 22:37-40
• Golden Rule "Do to others as you would have them do to yourself” Luke 6:31
• Weightier Matters of Law. “But you have neglected the more important matters of the law—justice, mercy and faithfulness.” Matthew 23:23

Just to drive the point home, with a hypothetical example. Suppose a slavemaster opens up his bible and reads both Joshua 6:41 and Matthew 23:23. Can he by any stretch of the imagination say that the biblical record on treatment of his neighbor is unclear?

Here's another example. Suppose a driver sees on one hand some statutes on the law books saying he must not engage in vehicular homicide, and on the other hand a sign telling him he may drive as fast as 40 MPH. He then sees a bunch of children in the street. It would be absurd to claim the law is unclear. Or if the driver eventually decided to stop running over children, the problem was ultimately with the lawbooks.

Re. Morality:

Morality does not change with times. It remains constant - God's laws cannot be messed with and He is very clear on how we are to live.

The Old Testament details practices, issues which appear questionable (such as having more than one wife, or fathering your daughter's child) - these are not conveyng that God is ok with them. Rather, we need to read them as lessons and mistakes not to be committed by us (if you read the Old Testament carefully you will notice all these situations are without happy endings and there is a price to pay when you go out of God's will).

Therefore - there is no issue here at all. We as Christians are required to live morally - always.

There are two issues here: the general and the specific.

On the general: The idea that morality is changing in a positive direction is at best chauvinistic and at worst logically inconsistent. If your idea of morality is different from your grandfather's, by what standard do you say that your standard is "better" than his? Are you assuming that your standard is right and his is wrong? Who says? Presumably he would say the opposite: that your different standards show that the culture has degenerated since his time. To make any judgement between such conflicting standards, you would have to have an absolute standard to compare both your code and his against. And if you acknowledge the existence of such an absolute, timeless standard, than you are saying that morality has NOT changed.

I don't deny that there are ideas about morality that are popular in Western culture today that differ from moral teachings in the Bible. By what standard do you say that your standard is right and the Bible is wrong? I don't know what argument you could give other than your subjective opinion. You can't even claim that it's the concensus of humanity or anything like that: as you yourself point out, people in other cultures have different standards. People in your own culture in the past had different standards. Many moral issues are subjects of debate within Western culture today. (e.g. abortion, gay marriage) So I think I could fairly say: You're saying that a book that claims to be the Word of God, and that has been accepted as the Word of God by literally billions of people from all walks of life across many cultures over thousands of years, should be overruled by the subjective opinion of some guy who posts on a web forum.

On the specific: For any given Bible verse that you believe advocates a standard of morality that you consider unacceptable, there are several possible responses.

(a) In some cases I would say that you are mis-reading the Bible. For example, I don't know of any place in the Bible that describes slavery as a positive good. The Bible acknowledges the existence of slavery, and attempts to limit and regulate it. Perhaps this is in the same category as what Jesus said about OT laws on divorce: it is not God's ideal, but God recognizes that people will not accept a prohibition. (Matt 19:8)

(b) Frankly, I think many such criticisms of the Bible are strained. Like, I can't help but notice that in your discussion of the cash value of personal vows, you criticize the Bible for valuing women less than men, but you make no mention of it valuing children less than adults and the old less than the young. Didn't you consider this important? Is this because your moral standards have not evolved sufficiently to recognize equality regardless of age? Or is it because you accept that the labor of a child or an old person might be worth less than the labor of an adult? And if so, maybe at that place and time the labor of a women was worth less than a man.

In any case, you are clearly suffering from an excessively materialistic attitude, assigning value to people solely in terms of their economic contribution. I've seen studies lately claiming that women are paid less than men, and that this indicates a reprenhensible undervaluing of women. These studies are often done by universities. The same universities that proudly boast that their graduates make more money than non-graduates. Doesn't this indicate that society devalues people based on education? Isn't this just as reprehensible as devaluing based on sex? Are mentally retarded people less valuable as human beings than geniuses?

(c) As I said above, maybe the Bible is right and you are wrong.

From my perspective as a minister I view the bible as a whole, meaning that it speaks to the societal needs of man, that morality is important as a form of restraint and that the restraints moral law places on man are meant to help him interact with others in a way that builds society rather than tearing it down.

In a perfect world we would all hold true to the moral dictates of a immutable, omniscient creator God. But man is inherently prone to self will (i.e. sin) and that makes him predisposed to disobey God's moral law. When we break that law we cause damage to ourselves and others. In regard to the slave and productivity thing these things are so unimportant in light of the true focus of the bible which is primarily given to demonstrate that man is sinful which those two points according to you do prove.

But unlike you, the bible declares that man is incapable of doing good apart from a governing force outside of himself. Man is evil by nature, sin is not a learned behavior it is a predisposition. When you say to your incent toddler "don't touch that lamp its hot" there is no training required for that child to wait until you leave the room to test your theory. When the child knows something is not permitted you don't need to teach them how to lie about what they did.

The only thing that retrains men are laws or spiritual reformation. God used laws to get the people to Jesus and Jesus made it possible for us to have true heart change. That is where the new covenant promise of salvation by grace comes in.

So I definitely fall into the category that says societal morality might change over time depending on many factors. And when I look across the world I don't see much hope for sinful man to fix himself. (i.e. Man is not getting morally better over time) Everywhere I look I see envy, greed, religious and secular hate, lust for power and ambition creating chaos in peoples lives.

So I'll keep preaching Jesus that He loves you and that He has a plan for your life and that He wants the best for you. That His love is unconditional and your life is redeemable. Jesus made only one caveat in following Him you must take up your cross like He did, accepting the struggles and persecution and hardships whatever they are and walk out the remainder of your life with Him, seeking to please the Father by your willful submission to Christ. So I guess I would fall into the group #1 above. Have a great day.

“Morality is not a constant ... evolves over time ... in a positive direction”.

I don’t think I’ll agree with this premise. You are basing positivity on chronology of time. Change doesn’t necessarily mean improvement. Ancient Rome switched from Republic to Monarchy.

Secondly, implicit within that argument is assumption that the morality you now have is a good development. How do you figure? I’m sure there are plenty from other countries that’ll disagree with your perspectives on criminal and civil code (Middle East). What is to say that what they’ve evolved is inferior to yours?

Thirdly, metaphysically and hypothetically speaking could morality even evolve? If yes, what could be the state of morality in a billion years from now? Would rape become acceptable? Would hatred be preferable to Love? What set of values would you like to see inverted? If you say none, then you are holding what you have now to be a constant/absolute. In other words everyone who lived before you had to evolve but not you. This I find in contradiction to your assertion that morality must evolve.

As to your references to Old Testament, if you are making those assertions to show that Old Testament God is evil, I can’t help it much. As you already have an idea and are presenting collected evidence for it. My refutation of that evidence would only evoke a search for new material.

However if you are a Christian who wishes to understand it, I’ll throw in my two cents. I think in its present form your argument is a straw man fallacy. Straw man is making someone say what he/she does not (or what she said, but out of context) and then attacking that.

Above you mention the fact that Bible condones slavery with all the syntax highlighting and repeat emphasis. However you omit other pieces of information that might help one make a judgement on the issue.

Missing pieces –

• The people Israelites enslaved were the Canaanites, Moabites etc. These were cannibal tribes that God drove out before Israelites as a form of divine judgement, warning the Israelites that they would suffer the same fate if they adopted the practices of these nations. Later under Israelite rule they learned to live lawfully. (Much as the Indians, South Americans, Africans today don’t practice human sacrifices, thanks to the British System of Laws). This form of slavery even exists today. The criminals in prisons are often made to work on community projects such as road building or mining. They are given no freedom and are forced to work without pay, and I’m yet to see anyone complain about it.
• The term servant/slave is overloaded with different meanings and has a lot of psychological baggage. It immediately creates a mental picture of purchasing someone with money and doing with them whatever you want. We cannot make up a mental image of whatever it means to us, and then insist it must be the exact same thing it means to God aswell. We'll be guilty of trying to make a straw man out of Him.

“It okay to give your daughter as a slave”

• I am sorry but ancient Israel was an agrarian society and the Joint Stock Company did not exist back in those days. The term servant/slave in those days would have been similar to what we call employee nowadays. You would buy them with money much as a company would buy you with a stipend or package. And you couldn’t do with them whatever you want. The principle of eye for eye, tooth for tooth held for them just as it would’ve held for a free or rich man. Today we have fanciful words for workers. A maid is a housekeeper, door to door shoe seller is Marketing Executive,
  and pizza boy is a Delivery Agent. But a wordplay with terms does not change the concept.

And though in the modern world the word slave has gone the concept hasn’t. There are more slaves today than at any point in history. Women and children are trafficked for sexual and labour exploitation.

Our so called “positive evolution of law” and “increased understanding or awareness” has not helped us.

It never would, so long as we believe in our own laws and not in the one who delivers from under the curse of the law.

Biblical Christianity has not changed in its definition of morality and will never change, since it is based on the Bible, which, as you pointed out, does not change.

However, there is an important distinction between Gentile believers and the Old Testament Jewish Law. The Law was a specific covenant with a specific people for a specific time, but it was a shadow of things to come.

While the New Testament did not usher in a differing morality, the ceremonial law was no longer in effect, and it was never applicable to Gentiles.

According to Biblical Christianity, adultery, theft, lying, deceit, slander, gossip, malice, lust, profanity, pride and h*m*sexuality have always been immoral and will always be immoral.

The passage regarding women, as X-Zero pointed out, has to do with the value that each gender could contribute in an agrarian society. Having grown up on a farm myself and being 6'4" 250+ lbs., I have no problem stating today that men still are much more suited to hard physical labor and are, consequently, more productive. In fact, my perspective is that I as a man should perform very laborious tasks (and very dirty task as well), so that women don't have to. Equality does not mean equivalence. Man != Woman. So, this is not an antiquated passage. The principle still holds today. If you could hire me or a typical 5'6" 1xx lb. woman to work in your fields, you would likely offer me more money, since my capacity and production in your fields would be much greater. Yet, if you could hire me or a woman for a job that is not labor-intensive, then you might offer the woman more if she is more qualified, more experienced, or just does a better job. So, this example is really a moot point.