Not only does the New Testament proclaim him God—the Old Testament does likewise, and with unmistakable speech.
The prophet Isaiah says:
“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.”
Micah, the prophet, glorifies the little town of Bethlehem, least as it is among the thousands of Judah, and foretells that he who shall be born there, and is to be ruler in Israel, is he “whose goings forth have been from old, from everlasting.” He who has been the outgoing and the forth-putting of the invisible God; and who is, and who alone can be, the visibility of God.
When we turn to the New Testament once more, we are given a vision of him, in Patmos, where he appears to that beloved John who had leaned so heavily on his heart in the days of the earthly pilgrimage. It is a vision of wonder, of glory, and divine splendor. He is seen as a man—as one who had become dead, who was now alive, who had conquered both death and the grave. His face shone with the light of the noonday sun, his eye glances were as a flame of fire, and when he spoke, his voice was as the sound of many waters; and this is what he said for himself:
“I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty.”
This is the climax.
He claimed to be Almighty God while on earth.
He claims it from heaven.
He says I am God—he says that because he declares himself as embracing the whole extent of being.