'Merry' in the Bible

So David said to Michal, “It was before the Lord [that I did this], who chose me above your father and all his house, to appoint me as ruler over Israel, the people of the Lord. Therefore I will celebrate [in pure enjoyment] before the Lord.

Now Absalom commanded his servants, “Notice carefully, when Amnon’s heart is joyous with wine, and when I say to you, ‘Strike Amnon,’ then kill him. Do not be afraid; have I not commanded you myself [and in doing so have I not taken full responsibility for his death]? Be courageous and brave.”