58:2 — Yet they seek me daily, and delight to know my ways, as a nation that did righteousness, and forsook not the ordinance of their God: they ask of me the ordinances of justice; they take delight in approaching to God.
58:3 — Wherefore have we fasted, say they, and thou seest not? wherefore have we afflicted our soul, and thou takest no knowledge? Behold, in the day of your fast ye find pleasure, and exact all your labours.
58:6 — Is not this the fast that I have chosen? to loose the bands of wickedness, to undo the heavy burdens, and to let the oppressed go free, and that ye break every yoke?
58:7 — Is it not to deal thy bread to the hungry, and that thou bring the poor that are cast out to thy house? when thou seest the naked, that thou cover him; and that thou hide not thyself from thine own flesh?
58:8 — Then shall thy light break forth as the morning, and thine health shall spring forth speedily: and thy righteousness shall go before thee; the glory of the Lord shall be thy rereward.
58:9 — Then shalt thou call, and the Lord shall answer; thou shalt cry, and he shall say, Here I am. If thou take away from the midst of thee the yoke, the putting forth of the finger, and speaking vanity;
58:12 — And they that shall be of thee shall build the old waste places: thou shalt raise up the foundations of many generations; and thou shalt be called, The repairer of the breach, The restorer of paths to dwell in.
58:13 — If thou turn away thy foot from the sabbath, from doing thy pleasure on my holy day; and call the sabbath a delight, the holy of the Lord, honourable; and shalt honour him, not doing thine own ways, nor finding thine own pleasure, nor speaking thine own words:
58:14 — Then shalt thou delight thyself in the Lord; and I will cause thee to ride upon the high places of the earth, and feed thee with the heritage of Jacob thy father: for the mouth of the Lord hath spoken it.
Isaiah 58 opens with people who look serious about God. They seek him every day, they ask about what is right, they act like they love being close to him, and they even have the right religious tone, “we have afflicted our soul.” Then God answers in a way that cuts through the performance. On the same day they fast, they still “exact all your labours.” That line makes the first accusation plain: their intense religion has become a cover for keeping their grip on other people. They can talk about justice while their workers keep getting squeezed. The fast does not interrupt the system that keeps them comfortable. It sits on top of it, like a clean layer that lets them feel faithful without loosening their hold.
The chapter also refuses an easy read where the people are obvious hypocrites and God is simply swatting them down. Their complaint sounds reasonable because it is the kind of complaint sincere worshipers make. They are confused that God does not seem to notice their devotion. Isaiah even grants that they are in the habit of seeking him. That is what makes “exact all your labours” so sharp. It is a business phrase dropped into a spiritual argument, and it exposes how their piety and their economics are running together. While they go without food, somebody else is still carrying their load, keeping the household, the fields, the shop going. Their fast can even become another way to dominate, a day when the powerful announce sacrifice while the vulnerable pay the cost. That complicates the simple slogan that justice automatically produces answered prayer. The same practice that can be repentance can also be a tool of control when it never touches the lever-pulling. Amos carries the same instinct: God can reject a festival when the public life underneath it is rotten. The worship is full, the exploitation is still there, and God is not tricked.