2 Samuel 13:28,29
Now Absalom had commanded his servants, saying, Mark you now when Amnon's heart is merry with wine, and when I say to you, Smite Amnon; then kill him, fear not: have not I commanded you? be courageous, and be valiant.
Nave's Topical Index

Chastisements.
... show themselves, though apparently ten years at least passed before Absalom's revolt,
at ... the lesson it had taught them, and lust and fratricide desolated his ...
//christianbookshelf.org/maclaren/the life of david/xiv chastisements.htm

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