"Love . . . is kind" (1 Cor. 13:4, NKJV). Strife always lurks around looking for a crack to crawl through. When we are harsh with someone, particularly someone who is distraught, we stir up anger. However, kindness acts as a healing salve. Kindness will keep strife out. "And a servant of the Lord must not quarrel but be gentle to all" (2 Tim. 2:24, NKJV).
H/T: Conflict Free Living by Joyce Meyer