Don’t fall for it! Everyone has moments when we find dirt on someone or we catch an enemy at a weak moment. David could have killed Saul twice, which would have saved the kingdom from a megalomaniac who wanted to kill David. Then again, what then?
If David had killed Saul when chances came, many respected voices in the kingdom would have called it an “assassination”, possibly spiraling into civil war.
These small control chances we stumble across are opportunities to demonstrate our maturity; using them to dominate is just weak and petty. Don’t, and don’t fear those who try.