Salvation Act 2:38-39 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins and, ye shall receive the gift of the Holy Ghost. For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. That verse is the very first sermon preached. Peter was telling the crowds what they must do to be saved. You see the crowds had just witnessed the outpouring of the Holy Ghost. They heard the believers speak in their native tongues. They were amazed at their behavior and, thought they were drunk. Peter explained that the believers weren't drunk. They were filled with God's Holy Spirit. Peter explains this outpouring was prophesied by the prophet Joel: And it shall come to pass in the last days I will pour out my Spirit upon all flesh: and your sons and your daughters shall prophecy, and your young men shall see visions, and your old men shall d