Malachi 1:6-7

6The Lord of Heaven’s Armies says to the priests: “A son honors his father, and a servant respects his master. If I am your father and master, where are the honor and respect I deserve? You have shown contempt for my name! “But you ask, ‘How have we ever shown contempt for your name?’

7“You have shown contempt by offering defiled sacrifices on my altar. “Then you ask, ‘How have we defiled the sacrifices?’ “You defile them by saying the altar of the Lord deserves no respect.