581 "Shout with the voice of a trumpet blast. Shout aloud! Don't be timid. Tell my people Israel of their sins! 2 Yet they act so pious! They come to the Temple every day and seem delighted to learn all about me. They act like a righteous nation that would never abandon the laws of its God. They ask me to take action on their behalf, pretending they want to be near me.
3 'We have fasted before you!' they say. 'Why aren't you impressed? We have been very hard on ourselves, and you don't even notice it!' "I will tell you why!" I respond. "It's because you are fasting to please yourselves. Even while you fast, you keep oppressing your workers. 4 What good is fasting when you keep on fighting and quarreling? This kind of fasting will never get you anywhere with me. 5 You humble yourselves by going through the motions of penance, bowing your heads like reeds bending in the wind. You dress in burlap and cover yourselves with ashes. Is this what you call fasting? Do you really think this will please the Lord ?
Matthew Henry's Commentary on Isaiah 58:1-5
Commentary on Isaiah 58:1-2
(Read Isaiah 58:1-2)
The Holy Spirit had hypocrites of every age in view. Self-love and timid Christians may say, Spare thyself; dislike to the cross and other motives will say, "Spare the rich and powerful;" but God says, "Spare not:" and we must obey God, not men. We all need earnestly to pray for God's assistance in examining ourselves. Men may go far toward heaven, yet come short; and they may go to hell with a good reputation.
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.