The priests were going through the motions, but neither they nor the people were honoring God from their hearts and their offerings showed it.
BibleGateway: Malachi 1:6-14 ESV Text: Malachi 1:6-14 Malachi 1:6–14 (Listen) The Priests’ Polluted Offerings 6 “A son honors his father, and a servant his master. If then I am a father, where is my honor? And if I am a master, where is my fear? says the LORD of hosts to you, O priests, who despise my name. But you say, ‘How have we despised your name?’ 7 By offering polluted food upon my altar. But you say, ‘How have we polluted…