Malachi 1:7-8

Ye offer polluted bread upon mine altar By this seems to be meant, the bread-offering, or the cake of fine flour, which was to be offered with the continual sacrifice in the morning and evening of every day. By being polluted is to be understood, that it was not such as the law required. They diminished something, either in the quality or quantity of what the law commanded them to offer; either the bread was not made of good flour, or mixed with the required quantity of good oil. And ye say, Wherein have we polluted thee? Or dishonoured, or had thee in contempt? The answer is ready, In that ye say, The table of the Lord is contemptible You pretend, as a cover for your avarice, that the table or altar of the Lord is despised among the people, and that therefore they do not bring to it, by way of offering, that quantity of flour and oil which they should. Or the meaning is, By your actions you declare how little value you have for the worship of God, since you care not in how slight and contemptuous a manner it is performed. And if ye offer the blind for sacrifice, is it not evil? The beasts to be offered were required to be perfect and without blemish, Leviticus 22:21. Offer it now to thy governor; will he be pleased with thee? Wilt thou be acceptable or welcome unto him, bringing him such a worthless present? It argues a great contempt of Almighty God, when men are less careful in maintaining the decencies of his worship than they are in giving proper respect to their superiors.