They can't possess all the nations called by God's name until the Gospel goes to them and they were discussing in the council of Jerusalem whether it should or not? Peter said it should and already is beginning to. Amos said it will. They agreed, because before the tabernacle would be rebuit the Gentiles had to be brought into the kingdom.
The point was first things first --
That's not what Amos says though. Read it again:
Acts 15:16-17
'After this I will return And will rebuild the tabernacle of David, which has fallen down; I will rebuild its ruins, And I will set it up; So that the rest of mankind may seek the LORD. Even all the Gentiles who are called by My name, Says the LORD who does all these things.'
The Temple must be rebuilt, so that the rest of mankind may seek the LORD. Even all the Gentiles who are called by His name.
Now this doesn't make sense. For almost 2000 years, we've had gentiles seeking the LORD, yet no temple has been rebuilt. Or has it?
Christ refers to his body as a temple:
John 2:19-21 Jesus answered and said to them, "Destroy this temple, and in three days I will raise it up." Then the Jews said, "It has taken forty-six years to build this temple, and will You raise it up in three days?" But He was speaking of the temple of His body.
Stephen tells the Jews that God does not live in temples made with hands:
Acts 7:48-50 “However, the Most High does not dwell in temples made with hands, as the prophet says:
’Heaven is My throne,
And earth is My footstool.
What house will you build for Me? says the LORD,
Or what is the place of My rest?
Has My hand not made all these things?'”
Paul tells the people of Athens that God does not dwell in temples:
Acts 17:24 God, who made the world and everything in it, since He is Lord of heaven and earth, does not dwell in temples made with hands.
Paul tells the Christians in Corinth that they are the temple of God:
1 Corinthians 3:16 Do you not know that you are the temple of God and that the Spirit of God dwells in you? If anyone defiles the temple of God, God will destroy him. For the temple of God is holy, which temple you are.
1 Corinthians 6:19 Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own?
2 Corinthians 6:16 And what agreement has the temple of God with idols? For you are the temple of the living God. As God has said:
"I will dwell in them
And walk among them.
I will be their God,
And they shall be My people."
Paul tells the Ephesians that the Christian community along with Christ (the cornerstone) comes together to form the temple of God:
Ephesians 2:19-22 Now, therefore, you are no longer strangers and foreigners, but fellow citizens with the saints and members of the household of God, having been built on the foundation of the apostles and prophets, Jesus Christ Himself being the chief cornerstone, in whom the whole building, being fitted together, grows into a holy temple in the Lord, in whom you also are being built together for a dwelling place of God in the Spirit.
The author of Hebrews explains that the earthly tabernacle was only a copy and shadow (dare we say symbol?) or the true tabernacle and that Christ is the High Priest of this true tabernacle:
Hebrews 8:1-6 Now this is the main point of the things we are saying: We have such a High Priest, who is seated at the right hand of the throne of the Majesty in the heavens, a Minister of the sanctuary and of the true tabernacle which the Lord erected, and not man. For every high priest is appointed to offer both gifts and sacrifices. Therefore it is necessary that this One also have something to offer. For if He were on earth, He would not be a priest, since there are priests who offer the gifts according to the law; who serve the copy and shadow of the heavenly things, as Moses was divinely instructed when he was about to make the tabernacle. For He said, "See that you make all things according to the pattern shown you on the mountain." But now He has obtained a more excellent ministry, inasmuch as He is also Mediator of a better covenant, which was established on better promises.
Hebrews 9:11-12 But Christ came as High Priest of the good things to come, with the greater and more perfect tabernacle not made with hands, that is, not of this creation. Not with the blood of goats and calves, but with His own blood He entered the Most Holy Place once for all, having obtained eternal redemption.
Since Christ is the Mediator between us and the heavenly temple, the earthly temple is no longer necessary (to serve as a symbol of what was to be, since we already have it!).
In fact Paul goes as far as saying that those who are in Christ are already sitting in that true tabernacle:
Ephesians 2:4-6 But God, who is rich in mercy, because of His great love with which He loved us, even when we were dead in trespasses, made us alive together with Christ (by grace you have been saved), and raised us up together, and made us sit together in the heavenly places in Christ Jesus,
I don’t see how it could be clearer than that.
We need to stop trying to find fulfillment of prophecy in current events. It is fulfilled in Christ.
Luke 24:27 And beginning at Moses and all the Prophets, He expounded to them in all the Scriptures the things concerning Himself.