My english skill is not enough to continue this conversation on a high level, so let Word of God answer you.
2 Timothy 3:16 -> "All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness"
Bible is one piece, one author - Holy Spirit. So, all verses are true. This is why i prove one with another.
2 Corinthians 2: 17 -> "For we are not as many, which corrupt the word of God: but as of sincerity, but as of God, in the sight of God speak we in Christ."
We cant disprove one verse with another. All verses are true. To understanding Bible, we need wisdom from God, called "knowledge". (Knowledge puffeth up, but charity edifieth. - 1 Corinthians 8:1)
James 1:5 -> "If any of you lack wisdom, let him ask of God, that giveth to all men liberally, and upbraideth not; and it shall be given him."
About Psalm 82:6. Let read this: "And they spake against the God of Jerusalem, as against the gods of the people of the earth, which were the work of the hands of man." - 2 Chronicles 32:19. This "gods" are not true, they are not exist in reality, only in imaginations. They cant eat, speak or hear - Psalm 115. There is only one God - Ephesians 4:5-6, Deuteronomy 6:4, Mark 12:29, James 2:19.
Also, "But be not ye called Rabbi: for one is your Master, even Christ; and all ye are brethren." - Matthew 23:8. This means Islam is wrong. And, come on, Archangel said Bible is wrong and we need write new one, really? Islam is false from the beginning. This is by the way only.
Back to Psalm 82. From the beginning of men, mans called other humans gods, because of power, because of fame etc. So, false gods are only men (or idols who cant eat, hear or speak), and true God created them - "Ye are gods; and all of you are children of the most High. But ye shall die like men, and fall like one of the princes."
And go on, "Jesus answered them, Is it not written in your law, I said, Ye are gods? If he called them gods, unto whom the word of God came, and the scripture cannot be broken;" - John 10:34-35.
Word of God is full of wisdom, one verse support the other. So, meaning of this Psalm is, Israel is just a man, like other mans of earth. All created by God. But they are chosen, so they are unique, word of God came to them, but still they will die like men.
Answering is harder and take a lot of time, more than ask questions, so forgive me.
About Mark 10:18. I answered you by Word of God in last comment. Exactly this: Philippians 2:7-8 -> "But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men: And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross."
So why he said he is not good? Because of body of men. Full of sins, from the beginning to this day. He came with human body to this world, he is not just a man, but he came in body of men, like a man. He made himself. Also, this is humbleness. But he was and still he is without sins, btw.
As i said, all Bible is one piece, when one verse doesn't tell you, Jesus is God, read another. My last comment is full of answers for this. Mark 10:18 doesn't disprove this. Logic of this world is not enough to understand Word of God. Try understand this: "one day is with the Lord as a thousand years, and a thousand years as one day" (2 Peter 3:8). For this world, this is logically incorrect, but this means time is created by God, and Lord is not dependent by time.
At this moment i believe, Jesus is good, because of this: "God also hath highly exalted him" - Philippians 2:9.
Paul is servant of God. He (with Holy Spirit) is ruining all Islam, and all false religions, so they are want make him look false. But this is not true.
"And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction." - 2 Peter 3:15-16.
So, Peter is wrong too? This world cant understand by itself wisdom given to Paul by God.
About Deuteronomy 18:16. Because Jesus is the image of the invisible God (Colossians 1:15) and God is a Spirit (John 4:24). Secondly, Jesus had a body of man, this is why people didn't die. And one more - glory, body of men has no glory, but God has, and so Jesus.
This is the sample of description how Jesus look with glory: "His head and his hairs were white like wool, as white as snow; and his eyes were as a flame of fire", and more. Revelation 1:12-18.
"For in him dwelleth all the fulness of the Godhead bodily." - Colossians 2:9.
"that ye may know, and believe, that the Father is in me, and I in him." - John 10:38.
"I and my Father are one" - John 10:30.
You shouldn't ignore this, because this is the point of this discussion. Jesus and Father are one. You shouldn't ignore one verse and show another for your purposes. Like you ignored Hebrews 1:2-3.
And this should end this conversation: "In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men. [...] The same came for a witness, to bear witness of the Light, that all men through him might believe. He was not that Light, but was sent to bear witness of that Light. [...] And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth. John bare witness of him, and cried, saying, This was he of whom I spake, He that cometh after me is preferred before me: for he was before me. [...] 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 1:1-18.
Word, Light is Jesus Christ, Word was made flesh, and dwelt among us with human body of man. And John was sent to bear witness of that Light. John about Jesus.
Is this enough for you?
You misunderstand Paul. Read next verses: "To them that are without law, as without law, (being not without law to God, but under the law to Christ,) that I might gain them that are without law. To the weak became I as weak, that I might gain the weak: I am made all things to all men, that I might by all means save some."
He wasn't lie, he became, not simulated. Also, this is hard to understand with the ways of this world. You don't need wisdom of this world to understand, you need knowledge from God. Same with this verse: "And they that use this world, as not abusing it: for the fashion of this world passeth away." - 1 Corinthians 7:31. You can't understand all Word of God by yourself. Thats why non believers misunderstand all the time.
About 1 Thessalonians 4:17. We means believers of all generations, all brothers and sisters.
This verses doesn't say about Muhammad. Israel is Jacob, son of Isaac, son of Abraham.
I hope, all are understandable.