I believe Paul teaches indirectly that all prophets today are false. Scripture having replaced the office. But we have the early NT prophecies now as scripture.
Paul used that crucial word dunamis on several occasions. First, example, he preached "by the power of signs and wonders, through the power of the Spirit of God" (Romans 15:19).
1Corinthians is the most charismatic epistle of the NT. He used that same term 'dunamis' in that epistle as well:
"4 My message and my preaching were not with wise and persuasive words, but with a demonstration of the Spirit’s power, 5 so that your faith might not rest on human wisdom, but on God’s power."
Here too, Paul doesn't place much stock in ordinary TALK - that's not how he defines effective preaching. There has to be something EMPIRICAL - an empirically evident display of power. (A few posts back, I testified to my own experience of authenticatoin during a Sunday service).
Still not convinced? Take a hard look at what he says two chapters later:
19 But I will come to you very soon, if the Lord is willing, and then I will find out not only how these arrogant people are talking, but what power they have. 20 For the kingdom of God is not a matter of talk but of power. 21 What do you prefer? Shall I come to you with a rod of discipline, or shall I come in love and with a gentle spirit?
That's a pretty clear reference to EMPIRICAL power. He is saying that when he arrives, in their VICINITY, THEN he will see their power, or lack thereof. That's consistent with what he says elsewhere. The crucial point is Paul's definition of Kingdom-on-Earth:
"For the kingdom of God is not a matter of talk but of [empirical] power."
If I am to believe the cessationist, the definition of the Kingdom has CHANGED, nay REVERSED.
(1) Used to be, the kingdom of God was a matter of power, not of talk.
(2) NOW, it is a matter of talk, not of power.
That's insanity. If God wanted us to believe cessationism, He has an odd way of showing it. Evidently He's the most incompetent instructor that I've ever seen.