Then why did Paul speak about tongues in letters written to gentile churches?
If you're talking about those 7 Epistles written during Acts, those weren't Gentile churches. They were 100% Jewish churches, since every Gentile member was part of Israel, being grafted into Israel. The only one of Paul's Acts epistles written entirely to Gentiles was Galatians, grafted-in Gentiles that belonged to the all-Jewish Acts church. The other Acts epistles, Rom, 1&2Cor, and 1&2Thess, all have separate sections to the Jews and sections to the Gentiles, because Paul ALWAYS went to the Jew first. When the Jews didn't listen, he went to the Gentiles.
The first Gentile allowed in wasn't until 8 years after Pentecost, in Ac 10. The gospel of the grace of God that was preached by Paul to the Gentiles was that the Gentiles could share in a few of Israel's blessings without having to keep the law. To do that, they had to keep the 4 ordinances that were given to them at the big meeting in Acts 15. The Gentiles had no blessings of their own in Acts. Acts was an extension of Christ's ministry in the Gospels and the Gospels were an extension of the OT - ALL 3 periods, a total of 2000 (+/-) years were ALL- ISRAEL. The ONLY purpose of Gentiles in Acts was so they might provoke Israel to the point that they might convert and Christ would then quickly return. He said in Mt 23:39, that He wouldn't return until Israel accepted Him- also see Ac 3:19-20. They still haven't accepted Christ and, since they don't exist, in God's eyes and won't, until this Gentile period is over, about 45 years from now. Also, He won't return intil the 7 years time of Jacob's trouble is over. So, at a minimum, Christ won'r be coming back for at least 52 years. That old wives tale about Him returning ar any moment is certainly not Biblical.
Note what Paul said in Ac 26;22, about one year before Acts ended. EVERYTHING Paul taught during Acts, to Jews and Gentiles, has it's basis in the 100% Jewish OT
Having therefore obtained help of God, I continue unto this day, witnessing both to small and great, saying none other things than those which the prophets and Moses did say should come:
AFTER Acts, NOTHING in the doctrine found in Paul's 7 post-Acts epistles is found in the OT. Why? Because everything in those 7 books was written, before the world began, in the form of a Mystery, a secret, HID in God.
Eph 3:9
And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ:
Col 1:26
Even the mystery which hath been hid from ages and from generations, but now is made manifest to his saints:
This Mystery was given to Paul in a revelation from Jesus Christ, like everything else he taught and wrote
Eph 3:3
How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
Except for Christ, NOTHING EVER given to Israel, in the 59, all-Israel books, was given to Gentiles, today
. This includes the Acts Church, the Rapture, and the Gifts
. Nothing in those 59 books will tell us anything about what belongs to us Gentiles, what our Calling and Hope of our Calling are
, or anything about our future. We are an island surrounded by Israel, but this island has no doctrinal tracks into it or out of it. Our doctrine comes solely from what is contained in that Mystery and our doctrine comes ONLY from what's in Paul's 7 post-Acts epistles, which contains no tongues, no healing, no prophecy, no gifts, period.
There is no Israel today, in God's eyes. They are Loammi, not My people, Hos 1:9. They will always have to keep the law and, if they don't keep the law, they are not God's people. They can't keep the law without a temple or animal sacrifices. If they want to get saved today, they must essentially become Gentiles and believe in the death, burial, and resurrection of Jesus Christ. When Israel ceased to exist as a nation, in God's eyes, in 63AD, the Gifts also ceased to exist. What were these gifts? They were what Joel had prophesied in the all-Israel OT - FOR ISRAEL. I think that they were the New Covenant kicking in, and, if Israel had repented, they would still exist - FOR ISRAEL Of course, the 2000 year Gentile program of today wouldn't have existed. The NC belonged ONLY to Israel, Jer 31:31-34, Heb 8:8. The Gentiles in Acts share in the Gifts of the NC, but ONLY because they were grafted into Israel. They certainly aren't grafted in today and they share NOTHING given to Israel, including the Gifts.