Eternal sin
In Christian hamartiology, eternal sins, unforgivable sins, or unpardonable sins are sins which will not be forgiven by God. One eternal or unforgivable sin (blasphemy against the Holy Spirit) is specified in several passages of the Synoptic Gospels, including , , and .
Martha Wall
I have come to see that buying toys or ice cream or dog food is not sin. The sin lies in permitting Christians to remain victims of a warped sense of values that is impoverishing their own lives and robbing them of a great inheritance [in Heaven]... It is sin to allow earnest young Christians to plan mediocre lives around a materialistic ideal without challenging them to battle. We sin if we do not offer to lead the charge! God has sent us [missionaries] into a stirring conflict, one that should stir response in the blood of every Christian...God holds us responsible for advance!