1 Kings 21:27

27And when Ahab heard those words, he atore his clothes and bput sackcloth on his flesh and cfasted and lay in sackcloth and went about dejectedly.

Isaiah 58:5

5 dIs such the fast that I choose,
ea day for a person to humble himself?
Is it to bow down his head like a reed,
and to spread sackcloth and ashes under him?
Will you call this a fast,
and a day acceptable to the Lord?
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