Nuggets from An Urgent Call to a Serious Faith by Dave Hunt - God Has to Be Three-in-One
The New Testament presents three Persons who are distinct, yet each is recognized as God. At the same time we have repeatedly the clear statement that there is only one true God. Christ prays to the Father. Is He praying to Himself? “The Father sent the Son to be the Saviour of the world” (1 John:4:14). Did He send Himself? Worse yet, did one “office” pray to and send a “title”? The Father, Son, and Holy Spirit each has distinct functions, yet each works only in conjunction with the others. Chrsit said, “The words that I speak unto you I speak not of myself [on my own initiative]: but the Father that dwelleth in me, he doeth the works” (John:14:1) and “I will pray to the Father, and he shall give you another Comforter…even the Spirit of truth” (John:14:16-17). Throughout the New Testament, the Father, Son, and Holy Spirit are each separately honored and act as God, yet only in concert with one another.
The Old Testament also presents three Persons in the Godhead interacting. For example: “Hearken unto me, O Jacob and Israel, my called; I am he; I am the first, I also am the last. Mine hand also hath laid the foundation of the earth, and my right hand hath spanned the heavens…From the time that it was, there am I: and now the Lord God, and His Spirit, hath sent me” (Isaiah:48:12-16). The One speaking through Isaiah refers to Himself as “the first and the last” and the Creator of all, so He must be God. But He speaks of two others in the same passage who must also be God: “The Lord God, and his Spirit, hath sent me.” Jesus presented a similar passage to the Pharisees (Matthew:22:41-46) when He asked them who the Messiah was, and they said, “The son of David.” He then quoted, “The Lord said unto my Lord, Sit thou on my right hand, till I make thine enemies thy footstool” (Psalm:110:1). Then Jesus asked them, “If David then call him Lord, how is he his son?” The Pharisees were speechless. Unitarianism cannot explain these two “Lords.”