'Altar of the Lord' in the Bible

In this: that ye offer unclean bread upon mine altar. And if ye will say, 'Wherein have we offered any unclean thing unto thee?' In this that ye say: the altar of the LORD is not to be regarded.

But ye have unhallowed it, in that ye say, 'The altar of the LORD is not to be regarded, and the thing that is set thereupon, not worthy to be eaten.'

Now have ye brought it to this point again, that the altar of the LORD is covered with tears, weeping, and mourning: so that I will no more regard the meat offering, neither will I receive or accept anything at your hands.