The Apostles were constantly proclaiming the gospel…repent and be baptized in the name of Jesus Christ. They recognized though that it was not the power of their preaching, but God’s calling the people to Himself. Three thousand souls in one day…what a revival! With so many new converts, the church was necessarily thrown together to learn what the Holy Spirit had to teach them. Verse 47 says, “the Lord was adding to their number day by day those who were being saved.”
Two things we can learn for the church today: 1) There must be a constant flow of the gospel message going out to the people. We are all witnesses! 2) It is God who calls the people to Himself. We must ask God to call people to our church and Himself. Wouldn’t it be awesome to see the gospel spread across the world like a pandemic. What would we do with three thousand new believers in one day?