The answer is: 3000 Baptised at Pentecost|3000 Baptized at Pentecost|3000 Baptisms at Pentecost

Acts 2:41 - The day of Pentecost marked a transformative moment for the early church, with Peter's preaching resulting in 3,000 baptisms. This event fulfils Joel's prophecy about the outpouring of the Spirit (Joel 2:28-32) and signifies the birth of the Christian church. A remarkable growth instantaneously developed!