Cursing

James 1:26 - If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
James 3:8 - But the tongue can no man tame; it is an unruly evil, full of deadly poison.

James 3:9 - Therewith bless we God, even the Father; and therewith curse we men, which are made after the similitude of God.

James 3:10 - Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be.