Yes, there is scriptural support in the New Testament indicating that human souls are in heaven.
If you believe that those Scriptures indicate that there are indeed humans that have died but are now currently in heaven, answer me this:
[ 39 This is the will of him who sent me, that I should lose none out of all those whom he has given me, but that I should resurrect them on the last day.]
Who are those/them referring to? Why are they in need to be resurrected, why didn't they go to heaven immediately upon their death? When is the last day?
[4 And I saw thrones, and those who sat on them were given authority to judge. Yes, I saw the souls of those executed for the witness they gave about Jesus and for speaking about God, and those who had not worshipped the wild beast or its image and had not received the mark on their forehead and on their hand. And they came to life and ruled as kings with the Christ for 1,000 years. 5 This is the first resurrection.]
There it states that those that had been executed are resurrected along with those that were killed/died refusing the beast.
The beast/8th king has not begun ruling yet, so the MOTB, etc. is still future. At this point none of those could have even been killed/died refusing the beast/8th king in need to be resurrected. So, the first resurrection as not occurred yet which means those executed have not been resurrected yet.
The question is, why do any of them need to be resurrected, why don't they go straight to heaven?
And since this 'first resurrection' has not occurred yet, doesn't that mean the 'last day' has not come yet?
[ 16 because the Lord himself will descend from heaven with a commanding call, with an archangel’s voice and with God’s trumpet, and those who are dead in union with Christ will rise first]
That shows that the dead in union with Jesus will be resurrected at his second coming. Why do they have to be resurrected then, why aren't they already in heaven when they died?
And doesn't this mean that Jesus' 'second coming' is the 'last day'/'first resurrection'?
Catholic teaching recognizes certain signs that are expected to precede the final coming of Christ, though the exact sequence and timing remain a mystery.
What is the mystery, doesn't it clearly state that Jesus will come AFTER the GT/8th king 42-month rule?
[ 24 “But in those days, after that tribulation, the sun will be darkened, and the moon will not give its light, 25 and the stars will be falling out of heaven, and the powers that are in the heavens will be shaken. 26 And then they will see the Son of man coming in the clouds with great power and glory.]
[ 7 But you who suffer tribulation will be given relief along with us at the revelation of the Lord Jesus from heaven with his powerful angels 8 in a flaming fire, as he brings vengeance on those who do not know God and those who do not obey the good news about our Lord Jesus. 9 These very ones will undergo the judicial punishment of everlasting destruction from before the Lord and from the glory of his strength, 10 at the time when he comes to be glorified in connection with his holy ones and to be regarded in that day with wonder among all those who exercised faith, because the witness we gave met with faith among you.]
[31 “When the Son of man comes in his glory, and all the angels with him, then he will sit down on his glorious throne. 32 All the nations will be gathered before him, and he will separate people one from another, just as a shepherd separates the sheep from the goats. 33 And he will put the sheep on his right hand, but the goats on his left.]