Christianity believes that God takes human shape in the form of Jesus, and comes down to earth as a man. Of course, Jews do not believe that God ever takes the shape of a human, but how do we know this? We are commanded not to make a graven image or likeness of God, but how do we know that God does not create a human likeness of himself?
- Anybody can ask a question
- Anybody can answer
- The best answers are voted up and rise to the top
The Rambam considered such an idea a violation of the Unity of God (Perush haMishnah, Introduction to Perek Chelek):
This is also a simple understanding of the passuk the Rambam quotes. Do not create any image or form of God since you saw no image, i.e. God does not take any physical form, so it would be a terrible thing to create such a false image.
Fine answer by Ariel K... Here's some more sources to supplement it:
1) Malachi 3:6 : "I am the Lord, I have not changed...". That God hasn't changed also implies the impossibility of taking on physical form, which would necessarily imply change. (Of course, the human body, indeed all physical matter are in the state of constant flux, which also precludes the possibility of immutability.)
2) Numbers 23:19: God is not a man...
That which is Eternal, by definition, cannot be preceded by anything. Hence, the Eternal cannot be preceded by any framework of existence.
G-d does not exist inside some framework of existence, like our bodies exist in spacetime. Rather, He is the existence and also the framework of existence of everything. Both things simultaneously. Hence there cannot be anything or anywhere devoid of Him. A body implies some kind of "place" where He is and another place where He is not and this is impossible in light of the above. source shaar yichud of chovos halevavos as I understand it.