2nd Samuel 13:28 Now Absalom had commanded his servants, saying, Mark ye now when Amnon's heart is merry with wine, and when I say unto you, Smite Amnon; then kill him, fear not: have not I commanded you? be courageous, and be valiant.
[Patriarchs & Prophets pp 727] “He shall restore fourfold,” had been David's unwitting sentence upon himself, on listening to the prophet Nathan's parable; and according to his own sentence he was to be judged. Four of his sons must fall, and the loss of each would be a result of the father's sin. The shameful crime of Amnon, the first-born, was permitted by David to pass unpunished and unrebuked. The law pronounced death upon the adulterer, and the unnatural crime of Amnon made him doubly guilty. But David, self-condemned for his own sin, failed to bring the offender to justice.
For two full years Absalom, the natural protector of the sister so foully wronged, concealed his purpose of revenge, but only to strike more surely at the last. At a feast of the king's sons the drunken, incestuous Amnon was slain by his brother's command. Twofold judgment had been meted out to David. The terrible message was carried to him, “Absalom hath slain all the king's sons, and there is not one of them left. Then the king arose, and tare his garments, and lay on the earth; and all his servants stood by with their clothes rent.” The king's sons, returning in alarm to Jerusalem, revealed to their father the truth; Amnon alone had been slain.
And they “lifted up their voice and wept: and the king also and all his servants wept very sore.” But Absalom fled to Talmai, the king of Geshur, his mother's father. Like other sons of David, Amnon had been left to selfish indulgence. He had sought to gratify every thought of his heart, regardless of the requirements of God. Notwithstanding his great sin, God had borne long with him. For two years he had been granted opportunity for repentance; but he continued in sin, and with his guilt upon him, he was cut down by death, to await the awful tribunal of the judgment.
2nd Samuel 13:29 And the servants of Absalom did unto Amnon as Absalom had commanded. Then all the king's sons arose, and every man gat him up upon his mule, and fled.
May God add His blessing to the study of His word. "Good night" and God bless!