Paul said they would end so they ended.
Not sure about that logic, Roger. He also said Christ would come back. Has he?
The perfect of verse 10 is the completed word of God the bible.
See PB's response.
Prophecy has several meanings in scripture. In this verse it is understood to be Gods word. God is no longer adding to His word so that prophecy has ended.
Again, see PB's response. Prophesy in 1 Cor 13:8 is smack dab in the middle of chapters 12 and 14, which are speaking about the manifestation of prophesy.
Knowledge is understood in this context to be knowledge given directly from God. We no have seminaries to teach men how to rightly divide the word of God so the knowledge spoken of in the passage is ended.
Which denomination's seminaries do you trust to teach people how to rightly divide the word of God?
Also, same as above, 1 Cor 13:8 is between chapters 12 and 14, and the topic is manifestations.
Tongues were given as a sign to unsaved Jews.
Aside from the benefits to individual believers and the church, tongues are a sign to unsaved people.
There are many circumstances present today where the Jews are not present to witness this sign. Pentecost is the feast of the latter first fruits. Tongues given at Pentecost are a latter first fruit of the Holy Spirit. Since Joel 2 is only partly fulfilled tongues are in that gap between Joel 2 and the return of our Savior.
I'm not sure what you're saying here, but aren't we still in that gap?
Tongues is never called a "sign gift" in the Bible.
were given to the apostolic church to establish the authority of the apostles and the disciples.
The manifestation of the gift of the Holy Spirit was, and is, given to every Christian.
After the bible was completed the bible became the authority used to preach Jesus to lost souls. The bible is certified by the Holy Spirit to be the word of God and the power of God unto salvation to everyone that believeth.
That's more or less true. But manifestations are not for preaching.
The question that you ask would require several volumes to adequately explain. It is one reasons why this subject is the source of so much controversy.
Any appearance of tongues in the modern NT church with no unsaved Jews being present would be suspect.
Would it be suspect, or outright fake? I thought you believed tongues ceased.
The guidelines Paul establishes and the underlying edict of God that signs of which tongues would fall would be out of order and God desires that all things be done decently and in order.
Paul gave instruction on how to do that. When done correctly, prophesy and tongues with interpretation are decent and in order.
Signs are for the Jew and knowledge is for the Gentile.
I assume you're referring to 1 Cor 1:22? That's a statement about the culture of the time. The wisdom the Greeks sought after was worldly wisdom, not godly wisdom. And tongues is a sign to any unbeliever, not just Jews.