Verse-by-Verse Exposition of Isaiah Chapter 58
As we delve into the book of Isaiah, chapter 58, we find the prophet addressing the people of God, calling them to a true and living faith, one that is not merely outward in its expressions, but deeply rooted in the heart. In verse 1, the Lord instructs Isaiah to "cry aloud" and not hold back, to declare to the people their transgressions and the house of Jacob their sins, for they have forgotten the Rock that bore them, and have turned to idols, as we see in Deuteronomy 32:18. The people are going through the motions of fasting, yet their hearts are far from God, and their actions are not in line with the spirit of humility and repentance that fasting is meant to embody, as seen in Joel 2:12-13.
In verses 2-5, the Lord highlights the hypocrisy of the people, who seek to draw near to Him with their mouths, yet their hearts are far from Him, as Jesus would later quote in Matthew 15:8. They fast, but only to quarrel and fight, and to strike with a wicked fist, rather than to loosen the bonds of wickedness, to undo the straps of the yoke, and to let the oppressed go free, as we see in Luke 4:18-19. The Lord is not pleased with their superficial displays of piety, and He calls them to a more authentic and selfless expression of faith.
As we move to verses 6-12, the prophet outlines what a true fast looks like: it is to loose the bonds of wickedness, to undo the straps of the yoke, to let the oppressed go free, and to break every yoke, as seen in Luke 4:18-19. It is to share your bread with the hungry, to bring the homeless poor into your house, and to cover the naked, as we see in Matthew 25:31-46. When the people of God live out their faith in this way, their light will break forth like the dawn, and their healing will quickly appear, as we see in Psalm 37:6. The Lord will guide them continually, and satisfy their desire in scorched places, and make their bones strong, and they shall be like a watered garden, as seen in Jeremiah 31:12.
In the final verses, 13-14, the Lord calls the people to honor the Sabbath, to turn away from doing their pleasure on God's holy day, and to call the Sabbath a delight, as we see in Exodus 20:8-11. When they do, the Lord will make them ride on the heights of the earth, and feed them with the heritage of Jacob their father, as seen in Deuteronomy 32:13. The people are called to trust in the Lord, to wait for Him, and to keep His way, that they might find rest for their souls, as we see in Jeremiah 6:16.