The Scripture tells us that "Open rebuke is better than love carefully concealed. Faithful are the wounds of a friend but the kisses of an enemy are deceitful" (Proverbs 27:5-6).
Rebuke means sin is not only pointed out, it is condemned. The church really doesn’t do this much anymore. We may have the reputation of being condemning, but we rarely do it. Most churches are more concerned about pleasing people and having a good reputation.
However, the early church took sin seriously – no matter who committed it.
Ambrose of Milan was a famous bishop in the fourth century. He never wanted to be a bishop, but the people of Milan forced him into it. Because of his position, Ambrose became close friends with Emperor Theodosius. Theodosius was a Christian but had a horrible temper. Ambrose never compromised with the emperor. He would tell him, “If a priest doesn’t tell you the truth, who will?”
Theodosius had appointed one of his friends as governor of Thessalonica. This governor made a fatal mistake. He threw a famous charioteer into jail for cheating. Chariot racing was the Super Bowl of the 4th century, so the city rioted and killed the governor.
Emperor Theodosius became enraged. Ambrose begged him to cool down, but the Emperor refused. He ordered the whole city to be massacred. Later he tried to change the order, but it was too late. The population had been crammed into the amphitheater and soldiers spent three hours hacking up men, women and children.
News of the massacre reached Milan. The next Sunday, when the Emperor came to church, Ambrose wouldn’t let him in. Theodosius pleaded for forgiveness (after all, he had changed the order). Ambrose told him to go away.
Eight months later the emperor returned to the church. Again Ambrose wouldn’t let him enter. In the end, the Emperor of Rome had to lie face down in the dirt before he was allowed to worship with the church again. Sin was taken that seriously.