Feeling Foolish...

And David said to Abigail, “Blessed be the LORD, the God of Israel, who sent you this day to meet me! Blessed be your discretion, and blessed be you, who have kept me this day from bloodguilt and from working salvation with my own hand! For as surely as the LORD, the God of Israel, lives, who has restrained me from hurting you, unless you had hurried and come to meet me, truly by morning there had not been left to Nabal so much as one male.” Then David received from her hand what she had brought him. And he said to her, “Go up in peace to your house. See, I have obeyed your voice, and I have granted your petition.”
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. 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. And about ten days later the LORD struck Nabal, and he died.
(1 Samuel 25:32-38 ESV)
Nabal means "fool." He lived, and died, true to his name.  When he heard what his wife had done to save their lives and all they had, "his heart died within him." He lost all will to live.  The thought of repentance never entered his heart or mind. He did not handle rebuke well.
David also felt foolish.  He had reacted to word of Nabal's scorn and was ready to march in and take revenge, until Abigail came and gently rebuked him. He had lost sight of the big picture: God had promised he would be king, no matter what Nabal had to say about it.  Also, for him to carry out this vengeful act would be the opposite of the character he had consistently been demonstrating. He would end up losing the trust of others, the respect of the people, and the worthiness to be the King.  Her wise words hit deeply into his soul, and he received them as well as her gifts.
We do foolish things every day.  The most foolish are when we refuse to admit when we are foolish, harden our hearts, dig in our heels, and become bitter. May God grant us the wisdom to confess our foolishness and respond to righteousness.