# raise their heads

This is a sign of being arrogant. Alternate translation: "are arrogant" (See: [[rc://en/ta/man/translate/translate-symaction]])

# let the mischief of their own lips cover them

This is a prayer that God would make the evildoers suffer from the trouble that they caused by the things they said.

# the mischief of their own lips

The trouble that they themselves caused by what they said. (See: [[rc://en/ta/man/translate/figs-metaphor]])

# cover them

That is, stop them from causing any more trouble. (See: [[rc://en/ta/man/translate/figs-metaphor]])