Romans 2:3-4 So when you, a mere human being, pass judgment on them and yet do the same things, do you think you will escape God’s judgment? Or do you show contempt for the riches of his kindness, forbearance and patience, not realizing that God’s kindness is intended to lead you to repentance? 

God’s kindness and grace is granted to us so that we may repent and live forever with Him, as well as to display His grace and kindness to others. Father, may I remember this when dealing with difficult people and unbelievers.