3 But they also complain, 'Why do we fast and you don't look our way? Why do we humble ourselves and you don't even notice?' "Well, here's why: "The bottom line on your 'fast days' is profit. You drive your employees much too hard. 4 You fast, but at the same time you bicker and fight. You fast, but you swing a mean fist. The kind of fasting you do won't get your prayers off the ground. 5 Do you think this is the kind of fast day I'm after: a day to show off humility? To put on a pious long face and parade around solemnly in black? Do you call that fasting, a fast day that I, God, would like?
Matthew Henry's Commentary on Isaiah 58:3-5
Commentary on Isaiah 58:3-12
(Read Isaiah 58:3-12)
A fast is a day to afflict the soul; if it does not express true sorrow for sin, and does not promote the putting away of sin, it is not a fast. These professors had shown sorrow on stated or occasioned fasts. But they indulged pride, covetousness, and malignant passions. To be liberal and merciful is more acceptable to God than mere fasting, which, without them, is vain and hypocritical. Many who seem humble in God's house, are hard at home, and harass their families. But no man's faith justifies, which does not work by love. Yet persons, families, neighbourhoods, churches, or nations, show repentance and sorrow for sin, by keeping a fast sincerely, and, from right motives, repenting, and doing good works. The heavy yoke of sin and oppression must be removed. As sin and sorrow dry the bones and weaken the strongest human constitution; so the duties of kindness and charity strengthen and refresh both body and mind. Those who do justly and love mercy, shall have the comfort, even in this world. Good works will bring the blessing of God, provided they are done from love to God and man, and wrought in the soul by the Holy Spirit.