'Altar' in the Bible

You are offering improper sacrifices on my altar, yet you ask, 'How have we offended you?' By treating the table of the Lord as if it is of no importance!

"I wish that one of you would close the temple doors, so that you no longer would light useless fires on my altar. I am not pleased with you," says the Lord who rules over all, "and I will no longer accept an offering from you.

You also do this: You cover the altar of the Lord with tears as you weep and groan, because he no longer pays any attention to the offering nor accepts it favorably from you.