This, rather, is the fasting that I wish: releasing those bound unjustly, untying the thongs of the yoke; Setting free the oppressed, breaking every yoke; Sharing your bread with the hungry, sheltering the oppressed and the homeless; Clothing the naked when you see them and not turning your back on your own. Then your light shall break forth like the dawn, and your wound shall quickly be healed; Your vindication shall go before you, and the glory of the Lord shall be your rear guard. Then you shall call, and the Lord will answer, you shall cry for help, and he will say: Here I am! (Isaiah 58:6-9a)
For you are not pleased with sacrifices;
Should I offer a burnt offering, you would not accept it.
My sacrifice, O God, is a contrite spirit;
A heart contrite and humbled, O God, you will not spurn. (Psalm 51:18-19)