Maybe John means what you think it means, but it seems far from certain. We need a narrative to make sense of contradictory statements rather than taking one set of scripture literally and ignoring or minimising other scripture. For example later on in John 1 we have
No man hath seen God at any time, the only begotten Son, which is in the bosom of the Father, he hath declared him. John 1:18
If no man has ever seen God at anytime, and yet a multitude have seen Jesus, then we have a contradiction, would you not agree?
Of course not
This verse says...no man has seen God but Jesus declares him...when you see Jesus, you see God! Jesus even says "if you see me, you see the father". Following on the previous verse...Moses' system was inferior, under it no one could see God.
Another apparent contradiction presents itself in the next few verses when John the disciple and apostle says of the John the Baptist that he claimed not to be the return of Elijah. In Malachi 4:5 it is prophesised that the Elijah would come before the Messiah. Yet Jesus indicates clearly to His perplexed disciples that John the Baptist was indeed Elijah (Matthew 17:12). How do we reconcile these contradictory statements? John the Baptist simply has a similar spirit to Elijah and so Jesus is correct, but not the same physical person so John the Baptist as recorded by John the apostle is correct also.
And this is the record of John, when the Jews sent priests and Levites from Jerusalem to ask him, Who art thou?
And he confessed, and denied not; but confessed, I am not the Christ.
And they asked him, What then? Art thou Elias? And he saith, I am not. Art thou that prophet? And he answered, No. John 18-21
It is the only example of the return of a prophet in the NT and on this basis I argue that the Returned Christ returns in the spirit of Jesus, but is not the same physical body.
You make this claim but this is not what scripture tells us, this is a conclusion that you have drawn.
If we examine the whole of John 5 as you say it seems to strengthen the argument that the Son and Father are distinct from each other. Rather than the Father and Son being exactly the same, the father has given the Son authority. We also have a clear break from the Old Covenant as Jesus has brought the New Covenant, and has the authority from God to change Mosaic law.
Jesus does not change Mosaic Law. Jesus came to fulfill the purpose of the Law, which is to point to him. (Read Galatians). Yes, the Father and the Son are distinct and yet are one. See John 1:1
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. John 5:19
I commented on this in the last post.
For as the Father hath life in himself; so hath he given to the Son to have life in himself; And hath given him authority to execute judgment also, because he is the Son of man. John 5:26-27
John 1:1-3 is a highly significant opening to John's gospel as he brings a new understanding to the nature of Jesus as distinct from both man and God, yet with similarities to both, thus supporting an understanding of logos similar to Philos.