In Christian hamartiology, eternal sins, unforgivable sins, or unpardonable sins are sins which will not be forgiven by God. One eternal or unforgivable sin is specified in several passages of the Synoptic Gospels. Mark 3: 28 - 29, Matthew 12: 31 - 32, and Luke 12: 10 state that there is one sin considered eternal and that is "blasphemy against the Holy Spirit ''.
in the bible what is the unforgivable sin
blasphemy against the Holy Spirit