Matthew 5:9, 22

“Blessed [spiritually calm with life-joy in God’s favor] are the makers and maintainers of peace, for they will [express His character and] be called the sons of God. [Heb 12:14]

But I say to you that everyone who continues to be angry with his brother or harbors malice against him shall be guilty before the court; and whoever speaks [contemptuously and insultingly] to his brother, ‘Raca (You empty-headed idiot)!’ shall be guilty before the supreme court (Sanhedrin); and whoever says, ‘You fool!’ shall be in danger of the fiery hell.