Romans 12:14
Keep on blessing your persecutors; keep on blessing and stop cursing them.
Matthew 5:22
But I say to you: "Everyone who harbors malice against his brother, will have to answer to the court, and whoever speaks contemptuously to his brother, will have to answer to the supreme court; and whoever says to his brother, 'You cursed fool? will have to pay the penalty in the pit of torture.
Matthew 5:43-44
"You have heard that it was said, 'You must love your neighbor and hate your enemy.'
Matthew 12:36
So I tell you, for every worthless word that men utter they will have to give account on the day of judgment;
James 3:6
And the tongue is a fire, and takes its place among the parts of our bodies as a world of evil; it soils the whole body and sets on fire the circle of man's nature, and itself is set on fire by hell.
James 3:9-10
With it we bless the Lord and Father, and with it we curse men who are made in God's likeness.
1 Peter 2:22-23
He never committed a sin, and deceit was never found on His lips.
1 Peter 3:9
never returning evil for evil or abuse for abuse, but blessing instead, because it was for this that you were called, to obtain the blessing of heirs.