God became a man

Behold the virgin will conceive and give birth to a son, and shall call his name Immanuel. God became a man and lived among us. 

 

Although he was in the form of God, did not count equality with God a thing to be grasped, but made himself nothing, taking the form of a servant, being born in the likeness of men. And being found in human form, he humbled himself by becoming obedient to the point of death... on a cross.

 

Therefore God has highly exalted him and bestowed on him the name that is above every name, so that at the name of Jesus every knee should bow, in heaven and on earth and under the earth, and every tongue confess that Jesus Christ is Lord, to the glory of God the Father. 

 

Is 7:14; Philipians 2:6-11