Easy to say. Hard to prove. All we need to do is review each passage in Acts where tongues are spoken by someone else other than the apostles, to see that God was giving the apostles positive proof that Gentiles are included in the household of God. What is the first mention of tongues in Acts after chapter 2? Acts 10:46 The household of Cornelius. Next, Acts 19:6 The disciples in Ephesus.
By the way, the only epistle where tongue are mentioned is 1 Corinthians, and Paul is critical of how these folks were doing it.
The Corinthian church was ignorant about spiritual gifts - they had forbidden speaking in tongues, which Paul told them to stop doing, in 1 Corinthians 14:9.
Paul instructs them at length in chapter 14 about how tongues and prophecy spoken aloud in church are to be used (the same church to whom he gives the list of all the types of spiritual gifts to in chapter 12) - and told them that he wanted to make sure they come behind in no GIFT while they await the second coming of Jesus:
1Co 1:7 So that ye come behind in no gift; waiting for the coming of our Lord Jesus Christ:
The word GIFT there is CHARISMA - which obviously the term CHARISMATIC derives from.
This clearly states Paul wanted them to have every spiritual gift, while they await the return of Jesus - making it obvious that spiritual gifts remain in operation until His return.
Peter said on Pentecost that the gift of the Holy Spirit they and the 120 gathered in the upper room had just received,
is for them, their children, those afar off, even to AS MANY AS GOD SHALL CALL in Acts 2:38-39.
Act 2:38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the GIFT of the Holy Ghost.
Act 2:39 For the PROMISE is unto you, and to your children, and to all that are afar off, EVEN AS MANY AS THE LORD OUR GOD SHALL CALL.
There’s the expiration date on the same spiritual gift given on Pentecost: when Jesus returns, and when God no longer is calling anyone.
Even though Paul told the Corinthians church to stop forbidding tongues, said he speaks in tongues more than anyone, said they should all speak in tongues, and explained that he wanted them to have all the gifts in operation in their church until Jesus returns, listed all the gifts of the spirit, and explained how to use those gifts during church services, cessationists try to use 1 Corinthians 13:8-11 as their proof text that spiritual gifts ended when the Bible was completed.
That claim is easily refuted by scriptures.
And in Acts it’s even that every time the apostles come into contact with new believers, they laid hands on them to receive the Holy Spirit, and they spoke in tongues as the evidence of receiving the Holy Ghost.
Cessationist doctrine is just plain biblical illiteracy.