Today many are like Cain. They do not think they need sins remitted. They do not think God would not save them because they are good people. They think they do not need baptism. They do not think they need to repent AND be baptized for the remission of sins.
Baptism has something to do with blood, because baptism and blood are for the remission of sins.
For this is my blood of the new testament, which is shed for many for the remission of sins. 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. They do not think they need to drink. Jesus told the disciples to remit sins. Whosoever sins they remit would be remitted.