Paul now gave stronger commands (cf. 1 Thessalonians 5:12). Not only the leaders but all the believers were responsible to minister to one another. Those who neglected their daily duties needed stirring up to action. Those who were timid or tended to become discouraged and despondent more easily than most needed cheering up, stimulation to press on, and extra help. Those who had not yet learned to lean on the Lord for their needs as they should were worthy of special support. Above all, the Thessalonians were to be patient with one another and with all people. They were not to retaliate but to do positive good to all others (cf. Proverbs 25:21; Matthew 5:38-42; Matthew 5:44-48; Luke 6:27-36; Romans 12:17-21; 1 Peter 2:19-23; 1 Peter 3:9). [source][source][source]
"Nonretaliation for personal wrongs is perhaps the best evidence of personal Christian maturity." [1][source]1 Thessalonians 5:14 focuses on those who are hurting, and 1 Thessalonians 5:15 on those who hurt others. [source][source][source]