John Chrysostom

This he says of every man, that as he that is dead is henceforth freed from sinning, lying as a dead body, so must he that has come up from baptism, since he has died there once for all, remain ever dead to sin. If then thou hast died in baptism, remain dead, for any one that dies can sin no more; but if thou sinnest, thou marrest God's gift. After requiring of us then heroism of this degree, he presently brings in the crown also.