Romans 3:14
"Their mouths are full of cursing and bitterness."
Psalm 10:7
His mouth is full of curses and deceptive, harmful words; his tongue injures and destroys.
Psalm 59:12
They speak sinful words. So let them be trapped by their own pride and by the curses and lies they speak!
Psalm 109:17-18
He loved to curse others, so those curses have come upon him. He had no desire to bless anyone, so he has experienced no blessings.
James 3:10
From the same mouth come blessing and cursing. These things should not be so, my brothers and sisters.