'Altar' in the Bible

You are presenting defiled food upon My altar. But you say, ‘How have we defiled You?’ In that you say, ‘The table of the Lord is to be despised.’

“Oh that there were one among you who would shut the gates, that you might not uselessly kindle fire on My altar! I am not pleased with you,” says the Lord of hosts, “nor will I accept an offering from you.

“This is another thing you do: you cover the altar of the Lord with tears, with weeping and with groaning, because He no longer regards the offering or accepts it with favor from your hand.