The sermon is based on Romans 12:14-21 (CEB)
14 Bless people who harass you—bless and don’t curse them. 15 Be happy with those who are happy, and cry with those who are crying.16 Consider everyone as equal, and don’t think that you’re better than anyone else. Instead, associate with people who have no status. Don’t think that you’re so smart. 17 Don’t pay back anyone for their evil actions with evil actions, but show respect for what everyone else believes is good.
18 If possible, to the best of your ability, live at peace with all people.19 Don’t try to get revenge for yourselves, my dear friends, but leave room for God’s wrath. It is written, Revenge belongs to me; I will pay it back, says the Lord.[a] 20 Instead, If your enemy is hungry, feed him; if he is thirsty, give him a drink. By doing this, you will pile burning coals of fire upon his head.[b] 21 Don’t be defeated by evil, but defeat evil with good.