Acts 2:38-41

38Then Peter said to them, Repent ye, and each one of you be baptized in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Spirit. 39For the promise is to you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. 40And with many other words did he testify and exhort, saying, Save yourselves from this perverse generation. 41Then they that gladly received his word were baptized: and the same day there were added to them about three thousand souls.