He is a piece of the Triune Godhead - the Great Three-in-One. He is the main conceived Son of the Most High God, yet is himself God. Jesus passes by numerous names, however he is equivalent with God. There's much sacred writing to back this up:
John 1: 1 at the outset was the Word, and the Word was with God, and the Word was God. 2 The equivalent was in the first place with God. 3 All things were made by him; and without him was no thing made that was made. 4 In him was life; and the life was the light of men. 5 And the light shineth in haziness; and the obscurity grasped it not.
Isaiah 9:6 For unto us a tyke is conceived, unto us a child is given: and the legislature will be upon his shoulder: and his name will be called Wonderful, Counselor, The compelling God, The everlasting Father, The Prince of Peace.
Matthew 3: 16 And Jesus, when he was absolved, went up straightway out of the water: and, lo, the sky were opened unto him, and he saw the Spirit of God dropping like a bird, and lighting upon him: 17 And lo a voice from paradise, saying, This is my adored Son, in whom I am very much satisfied.