Matthew 10:20

“So now, go, and I, even I, will be with your mouth and will instruct you what you shall speak.”

for the Holy Spirit will teach you in that very hour what you ought to say.”

And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit was giving them utterance.

since you are seeking proof that Christ speaks in me; He is not weak toward you, but mighty in you.

And for this reason we also thank God without ceasing that when you received the word of God which you heard from us, you accepted it not as the word of men, but for what it really is, the word of God, which also is at work in you who believe.