Upvote:2
Especially in recent years, I feel like this principle has been de-emphasized. Based on those quotes, it certainly sounds like, and reason seems to agree that God has a God, but that information is irrelevant to us. The most important principle is that for us, in this realm, there are no other Gods.
I also don't think it is a coincidence that the commandment is honor thy father and thy mother as opposed to honor thy grandfather and thy grandmother.
Upvote:5
We don't know the details, and it's possible we will never know in this life.
We know that (1) God was like us (a literal spiritual father-child relationship), and (2) that we can be become like him (heirs of all that he has, and joint-heirs with Christ). Beyond that, little else is known about the exaltation of God.
The notion that God had a Father does have certain symmetry to it, but it isn't discussed in the scriptures.
But only an account of this earth, and the inhabitants thereof, give I unto you...
And it came to pass that Moses spake unto the Lord, saying: Be merciful unto thy servant, O God, and tell me concerning this earth, and the inhabitants thereof, and also the heavens, and then thy servant will be content.
Moses 1:35-36
In fact, in the very same King Follett discourse you quoted -- which is probably the most detailed description on God's exaltation -- Joseph Smith says:
When you climb up a ladder, you must begin at the bottom, and ascend step by step, until you arrive at the top; and so it is with the principles of the gospelโyou must begin with the first, and go on until you learn all the principles of exaltation. But it will be a great while after you have passed through the veil before you will have learned them. It is not all to be comprehended in this world.