A soft answer turns away wrath, but a harsh word stirs up anger.
Proverbs 15:1 ESV

Regarding the soft answer, consider Jacob's approach to Esau in Genesis 32, .Gideon's flattery of Ephraim in Judges 8, and Abigail saving her family from David in 1 Samuel 25.

Regarding the harsh answer, consider Jephthah being too honest to Ephraim in Judges 12, David provoking Goliath to pride in 1 Samuel 17, and Yeshua's rebuke of the Pharisees in Luke 4.

There's a time for both.