This book is about the teaching of Jesus Christ, to his Displace on the subject of Baptism, some say they are not doing what Peter says, but they are doing what Jesus says, what they don't really know that Peter did everything Jesus told him to do.in Luke 24. Then opened he their understanding, that they might understand the scriptures, And said unto them, Thus it is written, and thus it behoved Christ to suffer, and to rise from the dead the third day: And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem. Luke 24:45-47 (KJV) He baptizes three thousand converts Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do? 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. Acts 2:37-38 (KJV) it all started at Acts 2:38