One in Messiah Congregation
Some verses that show that there are people with God in heaven now
Let's break down this scripture, John 3:13
John.3  And no man hath ascended up to heaven, but he that came down from heaven , even the Son of man which is in heaven.
1 - And no man hath ascended up to heaven,
2 - but he that came down from heaven,
3 - even the Son of man which is in heaven.
1 - John.3  And no man hath ascended up to heaven,
No mere man, as you Nicodemus, "came from heaven" or hath ascended to heaven to bring from heaven the knowledge and mysteries of God ( heavenly things - verse 12 ) and then return to earth to teach men what he knew, as I, Yeshua had done.
Prophets have had visions of what Yehovah has wanted them to reveal to the people, but they have never actually been in heaven and seen the God Almighty in all His power ( No man has seen God at any time - John 1:18, 4:12). However God showed up many time and in many places in other forms, manifestations speaking to them all through the scriptures.
Here is another example
David did not go to heaven to get this understanding then but it was revealed to him at that time.
Acts.2- For David is not ascended
into the heavens: but he saith himself, The LORD said unto my Lord, Sit thou on
my right hand,
***Please do not confuse this with "there is no one in heaven now"***
God is a God of the 'Living", not the dead. (Mark.12  He is not the God of the dead, but the God of the living: ye therefore do greatly err.)
Nicodemus had acknowledged Messiah Yeshua to be a teacher come from God:
John.3 [2 ] The same came to Jesus by night, and said unto him, Rabbi, we know that thou art a teacher come from God: for no man can do these miracles that thou doest, except God be with him.
Yeshua knew He was come of God
John.13 [3 ] Jesus . Yeshua knowing that the Father had given all things into his hands, and that he, Yeshua was come from God, and went to God;
Nicodemus knew "no man can do these miracles that thou doest, except God be with him". (John 3:2)
If Nicodemus and the rest of the Jews did not receive Yeshua, they must remain blind.
Matt.15 [14 ] Let them alone: they be blind leaders of the blind . And if the blind lead the blind , both shall fall into the ditch.
Luke.6 [39 ] And he spake a parable unto them, Can the blind lead the blind? shall they not both fall into the ditch?
Matt.23 [16 ] Woe unto you, ye blind guides, which say, Whosoever shall swear by the temple, it is nothing; but whosoever shall swear by the gold of the temple, he is a debtor!  Ye fools and blind: for whether is greater, the gold, or the temple that sanctifieth the gold?
 Ye fools and blind: for whether is greater, the gift, or the altar that sanctifieth the gift?
 Ye blind guides, which strain at a gnat, and swallow a camel.
 Thou blind Pharisee, cleanse first that which is within the cup and platter, that the outside of them may be clean also.
John.9  And Jesus said, For judgment I am come into this world, that they which see not might see; and that they which see might be made blind. [40 ] And some of the Pharisees which were with him heard these words, and said unto him, Are we blind also? [41 ] Jesus said unto them, If ye were blind, ye should have no sin: but now ye say, We see; therefore your sin remaineth.
There never had been, nor was, nor could be any mere man say he "came from heaven" to teach men what he knew as Yeshua had done.
2 - but he that came down from heaven,
3 - even the Son of man which is in heaven.
Yeshua is the Word of God made flesh, who is the Lord from heaven, and came from God to do the will of the Father by preaching the Gospel, working miracles, obeying the law / Torah, and suffering death and thereby obtaining eternal redemption for us. Yeshua was in the bosom of the Father who declared Him!
John.1 [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.
John.6 [38 ] For I came down from heaven, not to do mine own will, but the will of him that sent me.
 I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world. [58 ] This is that bread which came down from heaven: not as your fathers did eat manna, and are dead: he that eateth of this bread shall live for ever.
John.1  In the beginning was the Word, and the Word was with God, and the Word was God.
John.1 [14 ] 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.
1Tim.3 [16 ] And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
1John.3 [8 ] He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
John.7 [28 ] Then cried Jesus in the temple as he taught, saying, Ye both know me, and ye know whence I am: and I am not come of myself, but he that sent me is true, whom ye know not.
John.8 [42 ] Jesus said unto them, If God were your Father, ye would love me: for I proceeded forth and came from God; neither came I of myself, but he sent me.
John.13 - [3 ] Jesus knowing that the Father had given all things into his hands, and that he was come from God, and went to God;
At the same time Yeshua the Word of God, which is God, was on earth, God is also in Heaven.
Such omnipresence to be in heaven and earth at the same time, how great is our God? Amen!
Much people in heaven
Rev.19 And after these things I heard a great
voice of much people in heaven, saying,
Alleluia; Salvation, and glory, and honour, and power, unto the
Lord our God:
 For true and righteous are his judgments: for he hath judged the great whore, which did corrupt the earth with her fornication, and hath avenged the blood of his servants at her hand.
 And again they said,(the ones in heaven) Alleluia. And her smoke rose up for ever and ever.
The scripture below indicates Elijah did ascend into heaven
2Kgs.2 - [1 ] And it came to pass, when the LORD would take up Elijah into heaven by a whirlwind , that Elijah went with Elisha from Gilgal.
 And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, and parted them both asunder; and Elijah went up by a whirlwind into heaven.
The scriptures below indicate the two witnesses will ascend into heaven
Rev.11 [ 3] And I will give
power unto my two witnesses , and they
shall prophesy a thousand two hundred and threescore days, clothed in
 These are the two olive trees, and the two candlesticks standing before the God of the earth.
 And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed.
 These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will.
 And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.
 And their dead bodies shall lie in the street of the great city, which spiritually is called Sodom and Egypt, where also our Lord was crucified.
 And they of the people and kindreds and tongues and nations shall see their dead bodies three days and an half, and shall not suffer their dead bodies to be put in graves.
 And they that dwell upon the earth shall rejoice over them, and make merry, and shall send gifts one to another; because these two prophets tormented them that dwelt on the earth.
 And after three days and an half the Spirit of life from God entered into them, and they stood upon their feet; and great fear fell upon them which saw them.
 And they heard a great voice from heaven saying unto them, Come up hither. And they ascended up to heaven in a cloud ; and their enemies beheld them.
Enoch was translated
Gen.5  And Enoch walked with God: and he was not; for God took him.
Heb.11  By faith Enoch was translated that he should not see death; and was not found, because God had translated him: for before his translation he had this testimony, that he pleased God.
G3346 met-at-ith'-ay-mee - From G3326 and G5087; to transfer, that is, (literally) transport, (by implication) exchange, (reflexively) change sides, or (figuratively) pervert: - carry over, change, remove, translate, turn.
to transpose (two things, one of which is put in place of the other) 1a) to transfer 1b) to change 1c) to transfer one's self or suffer one's self to be transferred 1c1) to go or pass over 1c2) to fall away or desert from one person or thing to another