Isaiah 1: 10 - 17
10 Hear the word of the LORD, you rulers of Sodom! Give ear to the teaching of our God, you people of Gomor'rah!
11 "What to me is the multitude of your sacrifices? says the LORD; I have had enough of burnt offerings of rams and the fat of fed beasts; I do not delight in the blood of bulls, or of lambs, or of he-goats.
12 "When you come to appear before me, who requires of you this trampling of my courts?
13 Bring no more vain offerings; incense is an abomination to me. New moon and sabbath and the calling of assemblies -- I cannot endure iniquity and solemn assembly.
14 Your new moons and your appointed feasts my soul hates; they have become a burden to me, I am weary of bearing them.
15 When you spread forth your hands, I will hide my eyes from you; even though you make many prayers, I will not listen; your hands are full of blood.
16 Wash yourselves; make yourselves clean; remove the evil of your doings from before my eyes; cease to do evil,
17 learn to do good; seek justice, correct oppression; defend the fatherless, plead for the widow.

EWTN