Malachi 1:6-7

6“ ‘A son honors his father, and a servant his master. Then if I am a Father, where is My honor? And if I am a Master, where is the [reverent] fear and respect due Me?’ says the Lord of hosts to you, O priests, who despise My name. But you say, ‘How and in what way have we despised Your name?’

7You are presenting defiled food upon My altar. But you say, ‘How have we defiled You?’ By thinking that the table of the Lord is contemptible and may be despised.