Gentleness.

2 Timothy 2:22-25 (The Message)

Run away from infantile indulgence. Run after mature righteousness—faith, love, peace—joining those who are in honest and serious prayer before God. Refuse to get involved in inane discussions; they always end up in fights. God's servant must not be argumentative, but a gentle listener and a teacher who keeps cool, working firmly but patiently with those who refuse to obey.

1 Peter 5:5-9
Be submissive to those who are older. All of you, clothe yourselves with humility toward one another, because, "God opposes the proud but gives grace to the humble." Humble yourselves, therefore, under God's mighty hand, that he may lift you up in due time. Cast all your anxiety on him because he cares for you. Be self-controlled and alert. Your enemy the devil prowls around like a roaring lion looking for someone to devour. Resist him, standing firm in the faith, because you know that your brothers throughout the world are undergoing the same kind of sufferings.

Proverbs 15:1

A soft answer turns away wrath, but a harsh word stirs up anger.  

Titus 3:2
To speak evil of no one, to avoid quarreling, to be gentle, and to show perfect courtesy toward all people. 

 

Galatians 5:22-23
But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law.