Colossians 1:15 Who is the image of the invisible God, the firstborn of every creature:

The “Who” spoken here is in reference to Christ, Christ is the form, the manifest will of God the Father.

Ephesians 3:9 And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ:

Christ is also the creator of spirit beings. Do they have form? If realty is defined from an empirical perspective then the answer is “NO”. While spirits do not have physical form, form within the Spirit-Reality, is another thing.

Ezekiel 1:1-10 Now it came to pass…that the heavens were opened, and I saw visions of God…And I looked, and, behold…Also out of the midst thereof came the likeness of four living creatures. And this was their appearance; they had the likeness of a man. And every one had four faces, and every one had four wings. And their feet were straight feet; and the sole of their feet was like the sole of a calf's foot: and they sparkled like the colour of burnished brass. And they had the hands of a man under their wings on their four sides; and they four had their faces and their wings. Their wings were joined one to another; they turned not when they went; they went every one straight forward. As for the likeness of their faces, they four had the face of a man, and the face of a lion, on the right side: and they four had the face of an ox on the left side; they four also had the face of an eagle…

Our physical eyes glimpse a fallen world. But the Bible does speak to those that have “eyes to see”.

Ezekiel 12:2 Son of man, thou dwellest in the midst of a rebellious house, which have eyes to see, and see not; they have ears to hear, and hear not: for they are a rebellious house.

They are likely antagonistic because they see not!

Because God has not told us he has one. That pretty much sums up any response I could give. If it were important for us to know God would have told us.

There is also this line of reasoning. I don't know, so rather than conclude anything I just conclude nothing. I would rather not assign anything to God I don't know as doing so would anger him. God may have a form or he may not. Leaving that unknown doesn't have a bearing on my perception of him, his word, or his promise for the future. As it doesn't change anything, it doesn't matter.

As to heresy Titus 3:10&11

"As for a man who promotes a sect, reject him after a first and a second admonition, knowing that such a man has deviated from the way and is sinning and is self-condemned."

As a Jehovah's Witness I know that if I presented a thought such as that I would first be counselled on the matter from the scriptures by the congregation elders. If I refused to follow the bibles counsel then those elders may have to ask me to leave so as not to spread such a teaching to others.

It is deemed to be "heresy" if I am teaching something not in the bible or supported by the bible. 2 Timothy 3:5-7&13

"having an appearance of godliness but proving false to its power; and from these turn away. From among these arise men who slyly work their way into households and captivate weak women loaded down with sins, led by various desires, always learning and yet never able to come to an accurate knowledge of truth.

"But wicked men and impostors will advance from bad to worse, misleading and being misled."

Most importantly, Jesus himself says that God is spirit. When speaking to the woman at the well (John 4:24), He says:

God is spirit, and his worshipers must worship in the Spirit and in truth."

This would prove that if spirits have no form, then God, as Spirit, would have no form.

That Spirits have no form has been at the root of Christian theology since the beginning. The Platonic culture into which the New Testament was written would suggest that if Spirits did have form, the onus would be on the biblical writer to clarify the point. One of the most basic rules of hermeneutics is that a thing cannot mean what its original audience would not have expected it to mean.

Indeed, the early heresies centered around whether or not we would have physical form ourselves in the resurrection, because we would only be spirit. Indeed, Gnostics and Docetists taught that Jesus had to only "appear" to be physical, because they understood matter to be evil, and hence incarnation and 'taking one form' to be beneath God.

Additionally, the doctrine of omnipresence would seem to contradict the idea - if there is "no where I can go to flee from your spirit," then it seems odd to fix God into a form - as incarnated presence in a given location (separating a locale into 'is occupied' and 'is not occupied) would inherently give form, but by suggesting there is no 'not occupied by God', the converse is in fact, validated.)

God the Father, then, having historically not being understood as incarnated (the converse of this being the heresy of patripassianism), would be Spirit.

God is Described in Human Terms so that We can Understand More Easily

On numerous occasions in the Scripture, God is described in the way we would describe a human (e.g. mentioning his hands, head, or feet). The vast majority of these seem to be attempts to describe God in a way that humans will understand. "Hands," "head," and "feet" all have symbolic meaning as well, and so it makes sense (to me) when God says through Isaiah:

Isaiah 40:12 (NASB) Who has measured the waters in the hollow of His hand, And marked off the heavens by the span, And calculated the dust of the earth by the measure, And weighed the mountains in a balance And the hills in a pair of scales?

He's speaking metaphorically in the manner in which someone would describe a carpenter building a house. I don't think the intent is to say one way or the other that God must have a hand and used scales when he made the earth. It's an attempt to express a spiritual idea (God is the sovereign and master creator) in a way that is accessible to a regular person. That message was sent 2,700 years ago, and so the particular details of the metaphor were probably more apropos then than today, but the essential truth and meaning behind the statement is unchanged.

Visions

The way that God is described in various visions is somewhat different than the poetic "projections" (like Isaiah 40:12). In the visions, someone sees Him (Isaiah 6) or he is described as if he resembled humans in form (Job 1-2).

I think the same principle applies here, too. For example, let's pretend that I wanted to explain Calculus to a 4-year old. For a typical 4-year old, it would be impossible for him to understand completely. I'd have to settle for a simplified version of it, expressed in terms that he understood. That doesn't make my explanation incorrect. Rather, it's imprecise because there's no way to make the child understand all the detail. When God is described in human terms, I think the purpose is to give us an accurate understanding (so far as we're capable of understanding it) of the most important things that are going on, and the details we are given are not necessarily meant to be understood as a precise description of God's physical/spiritual appearance (form).

I don't say that it's impossible that God has a form. I only say that it would be difficult to be certain that he did because what's described in the (whole) Biblical account does not lend itself to proving that God definitely has a definite form. It's at least possible, but I don't think what we have in the Bible is sufficient to prove it.

Spirit does not have flesh and bones must be taken in the most literal sense. But it does not imply that spirit is formless. It has a shape and appearance. But it seems God can choose the form to be visible at his will. Exodus 33:20 suggests that God has a face

"For you cannot see my face because no one can see my face and live".

But John 4:24 says God is spirit. Therefore spirit must have a form, a face Exodus 33:22,23 further suggests

"When my glory passes by, i will put you in a cleft in the rock and cover you with my hand. Then i will remove my hand and you will see my back; but my face must not be seen".

So God who is a spirit according to the scripture has a face, a hand, back but no flesh and bones. It sounds weird but everything in the heavens were weird including the angels. Acts 2:3 says the Holy spirit, which is also to my understanding spirit in nature had the form of some flaming tongue.

SO I THINK FORM EXIST BUT IT IS NOT SO GOOD LOOKING

Me think the following applies here:

You shall not make for yourself a carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth.

That means (at least), that even if god had a form, we could not know it rightfully, for everyone that would show us how that form is like would violate the 3rd commandment.