Well, the scriptures says 'The Son cannot do anything by Himself', but it never says 'the Father cannot do anything by Himself'.
"By myself I can do nothing; I judge only as I hear, and my judgment is just, for I seek not to please myself but him who sent me. ; and My judgment is just, because I do not seek My own will, but the will of Him who sent Me." John 5:30
This is because the Father is the Source of the Trinity; Jesus (the Son and Logos) is begotten of Him, and the Holy Spirit proceeds from Him. We Orthodox speak of the Father as being the
arche of the Trinity--that is, its source. We also order the Father as first among the Persons of the Trinity--not in terms of dignity or power or divinity, but in terms of the relationship that exists between the three Persons. The three Persons (Father, Son AKA Jesus the Word of God, and the Holy Spirit) are all coequal in majesty, divinity and power, and co-eternal, yet in terms of the relationship between the three Persons, the Father enjoys primacy of place--not supremacy, but primacy.
It is reasonable to conclude Jesus follows the command of the Father and not Father the command of Christ. The fact that Jesus says "He sent Me", clearly shows they are Two distinct Persons. Like Bible and early Christians say, Jesus is a Mirror showing the image of God. That is the best and logically acceptable way to discribe the relation.
If you like, you may continue to attempt and demonstrate this to be the case. All I ask is that you try not to repeat the same tagline over and over, and not re-use evidences and arguments that have already been discussed.
The Orthodox Divine Liturgy is not a revealed Scripture. It is a poem put together as a prayer. I don't know what that proves. Our reference is Bible as a common source that we can discuss as authoritative Text.
No, our reference is the entirety of the Apostolic Tradition, the teachings of the Apostles that have been handed down both in written form (the Bible), and oral form (the vast majority of the Apostles' teachings and actions that were never written down). If you want to properly understand the Bible, you need to put it in the context of the entirety of the Apostolic Tradition, otherwise you're never going to get it right. The reason Christianity has tens of thousands of denominations is because all the other denominations have rejected the Tradition and invented their own man-made teachings. Only the Church has fully preserved the Tradition without alteration, addition or subtraction.
In fact the Orthodox Divine Liturgy contradicts itself.
No it does not. The Liturgy is properly understood by those with an education in the Christian faith. Those without the proper context in the Faith are going to misunderstand it. Just like the Bible; without being properly instructed, you will misinterpret it.
Once they believe God literally became Flesh, that is a change like it or not.
It is not a change in God's Divine Essence.
to say 'without change' doesn't make it correct. It is like I say, oh God who became dark, and you are light.
Except, God never ceases to be God. Jesus never ceased to be divine when He became human; he took on our humanity, but didn't stop being God. Your analogy assumes that God ceases to be light when He becomes dark. To modify your analogy, though I would have chosen better terms, Jesus (AKA God the Son) is light, and He becomes incarnate as dark. He unites the nature of light with the nature of dark within His one Person. He is at once both 100% light and 100% dark, by virtue of having these two natures. They do not mix together, but the light and dark (divine and human) natures each retain what is proper to their own natures. Jesus is originally light only, and His becoming incarnate as dark did not change His being light. He remains the same, because Who He is as light (or rather, as God) has not changed.
