It was prophesied in scripture that God would come in the form of a man.
Isaiah 9:6 For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace.
What child is this that he would be called the mighty God and the Everlasting Father? This verse is one of the most powerful statements of the Deity of Jesus. This verse describes Jesus as the Father.
The scriptures tell us that God would come in the form of a man. The Old Testament prophet Isaiah tells us His name would be called Immanuel. Matthew writes that His name would be called Emmanuel.
Isaiah 7:14 Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel.
Matthew 1:22-23 22 Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying, 23 Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.