The problem that I have with Jesus and God being one and the same is that when Jesus was asked when He would return, He said that He didn't know, as only The Father (God) knew the answer to that question. So..............if Jesus and God were one and the same, why did Jesus say that He didn't know when He'd return, only God knew the answer to that?
I never claim and never have claimed that God the Father and Jesus Christ are the same being. I reject that notion. However, They are one in purpose and now one in glory. God the Father is the head god of the godhead and Jesus and the Holy Ghost are subordinate to him.
John 5:19-20
19 Then answered Jesus and said unto them, Verily, verily, I say unto you, The Son can do nothing of himself, but what he seeth the Father do: for what things soever he doeth, these also doeth the Son likewise.
20 For the Father loveth the Son, and sheweth him all things that himself doeth: and he will shew him greater works than these, that ye may marvel.
For them to be one, Jesus must subordinate himself to the Father's will. I am sure that Jesus, as Jehovah and I AM, subordinated himself to the Father even then. When Jesus was on earth, He did not yet know the day nor the hour of the second coming but only the Father. It had not yet been revealed unto him. But all things are known by the Father and thus God is all knowing and I believe now that Jesus has been exalted in heaven, He too also knows all things. We know that the Father was not Jehovah of the Old Testament because of what John the Apostle tells us:
John 1:18
18 No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him.
The God of the Old Testament appeared unto the Prophets of old and spoke face to face with them. Those prophets saw the face of God.
Genesis 32:30
30 And Jacob called the name of the place Peniel: for I have seen God face to face, and my life is preserved.
Exodus 33:11
11 And the Lord spake unto Moses face to face, as a man speaketh unto his friend. And he turned again into the camp: but his servant Joshua, the son of Nun, a young man, departed not out of the tabernacle.
If no man had seen the Father, then it wasn't the Father who appeared and spoke to Jacob and Moses face to face. It was Jesus. Zachariah 14 is a prophesy of when Christ will come and reign as King of the whole earth. From this the Jews probably expected the Lord to come in power and glory to reign but that was not the purpose of his first coming. The Jews failed to understand other scriptures such as Isaiah 53 which speaks of his first coming and his sufferings Jesus was the Lord God of Israel who would come and suffer for their sins and be their redeemer. Jesus also is the Lord God who will come and save the Jews at His second coming and reign on earth for a thousand years.