David did not remove Nabal. God did. But note this: Abigail was married to a drunkard and a fool, and had saved him (without his knowledge) but she did report to him what she had done.
Not when he was drunk, but (probably) hungover.
She did not leave what she had done a secret, nor should she, for she had nullified his foolishness. Yet, she did respect his role as a husband, and trusted in God.
And she became, then, one of David’s wives. I would add that his wandering eye for feminine beauty caused him severe grief. He would have been better if he had stuck with Abigail alone.
36 And Abigail came to Nabal, and behold, he was holding a feast in his house, like the feast of a king. And Nabal’s heart was merry within him, for he was very drunk. So she told him nothing at all until the morning light. 37 In the morning, when the wine had gone out of Nabal, his wife told him these things, and his heart died within him, and he became as a stone. 38 And about ten days later the Lord struck Nabal, and he died.
39 When David heard that Nabal was dead, he said, “Blessed be the Lord who has avenged the insult I received at the hand of Nabal, and has kept back his servant from wrongdoing. The Lord has returned the evil of Nabal on his own head.” Then David sent and spoke to Abigail, to take her as his wife. 40 When the servants of David came to Abigail at Carmel, they said to her, “David has sent us to you to take you to him as his wife.” 41 And she rose and bowed with her face to the ground and said, “Behold, your handmaid is a servant to wash the feet of the servants of my lord.” 42 And Abigail hurried and rose and mounted a donkey, and her five young women attended her. She followed the messengers of David and became his wife.