It would be better for
him if a millstone were
hung around his neck,
and he were thrown
into the sea, than that
he should offend one of
these little ones.  Take
heed to yourselves. If
your brother sins
against you, rebuke
him; and if he repents,
forgive him.  And if he
sins against you seven
times in a day, and
seven times in a day
returns to you, saying,  
‘I repent,’ you shall
forgive him.”
Luke 17:2-4