Declarative Preaching

Acts 2:22 Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know: 23 Him, being delivered by the determinate counsel and foreknowledge of God, ye have taken, and by wicked hands have crucified and slain: 24 Whom God hath raised up, having loosed the pains of death: because it was not possible that he should be holden of it.

Peter wasn’t proving but preaching.  There is a difference. And the difference is punctuated by the power of the Holy Spirit. A man can prove through reasonable arguments. But Peter simply declares, and that with power endued from on high. The Spirit gives him utterance and the hearers are cut to the quick. He is not really trying to persuade them. He is simply declaring the truth about what is going on, who Jesus is, the guilt of the crowd, the need for repentance. And by God’s Spirit, the people hear and respond.