12 They proclaimed a fast, and set Naboth on high among the people.
1 Kings 21:12 Cross References - WEB
1 Kings 21:8-10
8 So she wrote letters in Ahab’s name, and sealed them with his seal, and sent the letters to the elders and to the nobles who were in his city, who lived with Naboth.
9 She wrote in the letters, saying, “Proclaim a fast, and set Naboth on high among the people.
10 Set two men, wicked fellows, before him, and let them testify against him, saying, ‘You cursed God and the king!’ Then carry him out, and stone him to death.”
Isaiah 58:4
4 Behold, you fast for strife and contention, and to strike with the fist of wickedness. You don’t fast today so as to make your voice to be heard on high.