The church recognizes that the Lord had two states while he was in the world: one called being emptied out; the other called glorification.
The prior state, being emptied out, is described in many passages in the Word, especially in the Psalms of David, but also in the Prophets. There is even one passage in Isaiah 53 where it says, “He emptied out his soul even to death” (Isaiah 53:12). This same state also entailed the Lord’s being humbled before the Father. In this state he prayed to the Father. In this state he says that he is doing the Father’s will and attributes everything he has done and said to the Father.
The following passages show that he prayed to the Father: Matthew 26:36–44; Mark 1:35; 6:46; 14:32–39; Luke 5:16; 6:12; 22:41–44; John 17:9, 15, 20. The following show that he did the Father’s will: John 4:34; 5:30. The following show that he attributed everything he had done and said to the Father: John 8:26, 27, 28; 12:49, 50; 14:10.
In fact, he cried out on the cross, “My God, my God, why have you abandoned me?” (Matthew 27:46; Mark 15:34). Furthermore, without this state it would have been impossible to crucify him.
The state of being glorified is also a state of union. The Lord was in this state when he was transfigured before three of his disciples. He was in it when he performed miracles. He was in it as often as he said that the Father and he were one, that the Father was in him and he was in the Father, and that all things belonging to the Father were his. After complete union he said he had power over all flesh (John 17:2) and all power in heaven and on earth (Matthew 28:18). There are also other such passages.
from True Christianity, Section 104