Acts 2:22 quotes St. Peter saying
"Men of Israel, listen to this message: Jesus of Nazareth was a man certified by God to you by miracles, wonders, and signs, which God did among you through Him, as you yourselves know."
The distinction between God, on the one hand, and Jesus, a man, seems fairly clear here, and comports with Unitarian views of God. This distinction is also clear throughout the rest of St. Peter's speech (for ex., 2:36 "Therefore let all Israel know with certainty that God has made this Jesus, whom you crucified, both Lord and Christ!").
How do Trinitarians understand Peter's beliefs at Acts 2:22? Do Trinitarians think Peter is a Unitarian in beliefs, or do Trinitarians attribute proto-Trinitarian beliefs to Peter that aren't clearly expressed here? If so, how would they paraphrase Acts 2:22 so as to make clear what Peter is saying about Jesus and God?