Psalms 64:8
They will be made to stumble,
What it says
Their own tongues bring them to ruin, and those who see them shake their heads.
What it is doing
This verse turns their chosen weapon back against them in public disgrace.
In context
1For the choirmaster. A Psalm of David. 2Hide me from the scheming of the wicked, 3who sharpen their tongues like swords 4ambushing the innocent in seclusion, 5They hold fast to their evil purpose; 6They devise injustice and say, 7But God will shoot them with arrows; 8They will be made to stumble, 9Then all mankind will fear 10Let the righteous rejoice in the LORD