17 Learn to do good. Seek justice. Help the oppressed. Defend the cause of orphans. Fight for the rights of widows. 18 "Come now, let's settle this," says the Lord . "Though your sins are like scarlet, I will make them as white as snow. Though they are red like crimson, I will make them as white as wool. 19 If you will only obey me, you will have plenty to eat. 20 But if you turn away and refuse to listen, you will be devoured by the sword of your enemies. I, the Lord, have spoken!"
21 See how Jerusalem, once so faithful, has become a prostitute. Once the home of justice and righteousness, she is now filled with murderers. 22 Once like pure silver, you have become like worthless slag. Once so pure, you are now like watered-down wine. 23 Your leaders are rebels, the companions of thieves. All of them love bribes and demand payoffs, but they refuse to defend the cause of orphans or fight for the rights of widows.
Matthew Henry's Commentary on Isaiah 1:17-23
Commentary on Isaiah 1:16-20
(Read Isaiah 1:16-20)
Not only feel sorrow for the sin committed, but break off the practice. We must be doing, not stand idle. We must be doing the good the Lord our God requires. It is plain that the sacrifices of the law could not atone, even for outward national crimes. But, blessed be God, there is a Fountain opened, in which sinners of every age and rank may be cleansed. Though our sins have been as scarlet and crimson, a deep dye, a double dye, first in the wool of original corruption, and afterwards in the many threads of actual transgression; though we have often dipped into sin, by many backslidings; yet pardoning mercy will take out the stain, Psalm 51:7. They should have all the happiness and comfort they could desire. Life and death, good and evil, are set before us. O Lord, incline all of us to live to thy glory.
Commentary on Isaiah 1:21-31
(Read Isaiah 1:21-31)
Neither holy cities nor royal ones are faithful to their trust, if religion does not dwell in them. Dross may shine like silver, and the wine that is mixed with water may still have the colour of wine. Those have a great deal to answer for, who do not help the oppressed, but oppress them. Men may do much by outward restraints; but only God works effectually by the influences of his Spirit, as a Spirit of Judgment. Sin is the worst captivity, the worst slavery. The redemption of the spiritual Zion, by the righteousness and death of Christ, and by his powerful grace, most fully accord with what is here meant. Utter ruin is threatened. The Jews should become as a tree when blasted by heat; as a garden without water, which in those hot countries would soon be burned up. Thus shall they be that trust in idols, or in an arm of flesh. Even the strong man shall be as tow; not only soon broken, and pulled to pieces, but easily catching fire. When the sinner has made himself as tow and stubble, and God makes himself as a consuming fire, what can prevent the utter ruin of the sinner?