The most important words in all of Scripture are found in John 3:3-7, where Christ said the following through the mouth of Jesus:-
John 3:3-7
3:3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born from above, he cannot SEE The Kingdom of God.
3:4 Nicodemus saith unto him, How can a man be born when he is old? Can he enter the second time into his mother’s womb, and be born?
3:5 Jesus answered, Verily, verily, I say unto thee, Except a man be born of water (human) and then is born (later) from above as his spirit-“Being” (his REAL self which is NOT human), he can NOT enter into The Kingdom of God (Who is a Spirit-“Being” - Num. 23:19; John 4:24).
3:6 That which is born of the flesh is flesh (human); and that which is born of the Spirit is spirit (a spirit-“Being”) - (which together form a human+Being).
3:7 Marvel not that I said unto thee, Ye MUST be born again.
If one isn’t born again as their true, spiritual self, knowing the DIFFERENCE between the spirit and the flesh, then they cannot “see” the Kingdom of God (the spiritual realm) much less enter it.
Christ, like God and the rest of the angels of heaven, is an immortal spiritual-Being (the first-created Son of God). Christ has been around since before the world was, as Father (God) created the worlds through Christ, teaching Christ everything through that process.
John 17:5 And now, O Father, glorify Thou me with Thine Own self with the glory which I had with Thee BEFORE THE WORLD WAS.
Hebrews 1:1-2
1:1 God, Who at sundry times and in diverse manners spoke in time past unto the fathers by the Prophets,
1:2 Hath in these last days spoken unto us by [His] Son, whom He hath appointed heir of all things, by whom also He made the worlds
John 5:19-20
5:19 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.
5:20 For the Father loveth the Son, and showeth him all things that Himself doeth: and He will show him greater works than these, that ye may marvel.
Everyone living in the Old Covenant/Testament knew Christ, and awaited Christ’s coming in the body of Jesus, as prophesied throughout the Old Covenant/Testament
Jesus was the mortal human son born of the virgin body of Mary, exactly as prophesied in the Old Covenant/Testament, recorded in the New Covenant/Testament and confirmed in the Koran/Quran.
Sura 19:18-20
19:18. She (Mary) said: “I seek refuge from thee to (“I AM”) Most Gracious: (come not near) if thou dost fear “I AM”.”
19:19. He said: “Nay, I am only a messenger from thy Lord, (to announce) to thee the gift of an Holy son.”
19:20. She (Mary) said: “How shall I have a son, seeing that no man has touched me, and I am not unchaste?”
When Christ (the immortal Son of God) incarnated Jesus (John 1:14), They became the human+Being we refer to as Jesus+Christ.
Christ led Moses and the Israelites through the wilderness for 40 years, after appearing in the “burning bush” to Moses.
Exodus 3:1 Now Moses kept the flock of Jethro his father in law, the priest of Midian: and he led the flock to the backside of the desert, and came to the mountain of God, [even] to Horeb.
3:2 And the angel of the “I AM” appeared unto him in a flame of fire out of the midst of a bush: and he looked, and, behold, the bush burned with fire, and the bush [was] not consumed.
3:3 And Moses said, I will now turn aside, and see this great sight, why the bush is not burnt.
And David called Christ “Lord”, and knew that Christ’s LORD is the LORD God Almighty.
Psalm 110:1 (A Psalm of David.) THE LORD God Almighty (the “I AM”) said unto my Lord (Christ), Sit thou at My right hand, until I make thine (Christ’s) enemies thy footstool.
Compare with:
1 Corinthians 11:3 But I would have you know, that the head of every man is Christ; and the head of the woman [is] the man; and the head of Christ [is] God.
And further, if everyone truly knew that they are also a spiritual-Being, temporarily incarnated inside the human they see in the mirror, then they would understand that they have been here for the past 6000 years and have experienced many human lifetimes. In other words, ALL of us were here during the times of the Old Covenant/Testament (and ever since), and NONE of us have ever ascended to heaven, except for Christ, Who came from heaven.
John 3:13-15
3:13 And no man hath ascended up to heaven, but he that came down from heaven, [even] the Son of Man which is from heaven.
3:14 And as Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up:
3:15 That whosoever believeth him should not perish, but have Eternal Life.