Sometimes people get confused as to why Jesus prayed to the Father, so this very significant to understand.
God has always been in the human form; before the incarnation He was called Jehovah. As the Lord said ‘We are made in His image’, so he is the original human form and we are human because of Him. Jesus is God, for God was born on earth of Mary, and had to grow like other humans except His soul is divine. The divine is one, it cannot separate from itself! It is omnipotent and omni-present and eternally one by nature.
God on earth, known as Jesus, made his physical human divine, which only God can do and He completed it in the resurrection! When he was born by Mary He took on for the first time a physical human born on earth. (There is much to it I hope to share, but this is the basic understanding I offer now).During His Life on Earth in the gradual process of growing the Lord Underwent two States, Humiliation and Glorification. From His birth the Lord had a human from the mother, and by successive steps through the glorification process He purified His human, so while He was in the world He had two states, the one called the state of humiliation or emptying out, and the other, the state of glorification, or union with the Divine called the Father. He was in the state of humiliation at the time and in the degree that He was in the human from the mother; and in that of glorification at the time and in the degree that He was in the Human from the Father.
In the state of humiliation He prayed to the Father as to one who was other than Himself; but in the state of glorification He spoke with the Father as with Himself. In this latter state He said that the Father was in Him and He in the Father, and that the Father and He were one. But in the state of humiliation He underwent temptations, and suffered the cross, and prayed to the Father not to forsake Him. For the Divine could not be tempted, much less could it suffer the cross, but His human could be tempted and suffered, and the whole course of his life was to purify it of all hereditary evil so he could resurrect. By means of temptations and continual victories in them, and by the passion of the cross which was the last of the temptations, the Lord completely conquered the hells, and fully glorified His Human.
These states only apply to the Lord because he is divine and infinite. The corresponding states that we as humans go through are called temptation and regeneration for the sake of being born again. Also, this is a short explanation but the whole purpose of my book is to fully show how all this works in detail, and in history.