2 Samuel 19: 5b-7a
As an accusation, Joab points out David's unconditional love for his wayward son, Absalom. We are called to embrace this level of forgiveness and love, for Jesus teaches us to “love our enemies and to pray for those who persecute us” ( Matthew 5:44). David is forced out of Jerusalem and greatly wronged by Absalom, but David still loves and forgives him, not holding Absalom's sin against him. David is even ridiculed by Joab and warned that all of David’s people will abandon him due to the love and forgiveness he extends to Absalom.
This is the level of forgiveness we see in Jesus, when during his Passion, he forgave those who scourged, mocked, ridiculed, and pinioned Him to the cross: "Father, forgive them, for they know not what they do." We are called to imitate Christ, to whom David is a type, emulating our Lord's unfathomable mercy toward others.