Peter stands up on the day of Pentecost and preaches the sermon that launches the church. Mark Clark opens in Acts 2 with what Peter's first words teach us about reaching the people around us, why the Spirit changes not just what you do but what you want to do, and why the "last days" started two thousand years ago. Sons and daughters, young and old — the point of Joel's prophecy is that nobody gets to disqualify themselves.
