Who preached to the crowd after the events of the Day of Pentecost?

After the events of the Day of Pentecost, it was Peter who preached to the crowd. This moment is significant in the New Testament as it marks the first public proclamation of the Gospel after the ascension of Jesus. Peter, filled with the Holy Spirit, addressed the onlookers who were bewildered by the miraculous signs accompanying the coming of the Holy Spirit. His sermon emphasized the fulfillment of prophetic scriptures and the centrality of Jesus' death and resurrection. This pivotal event led to the conversion of about three thousand people, highlighting Peter's crucial role in the early church. The other figures—John the Baptist, James, and Paul—were influential in different contexts of Scripture, but it was Peter's preaching on that day that directly followed the outpouring of the Holy Spirit and resulted in a significant expansion of the early Christian community.