Come now, and let us reason together; I am willing to lay aside my prerogative, and to submit the matter to a fair and equal trial, whether I do not deal justly in rejecting all your services, which are accompanied with such gross hypocrisy and wickedness, and whether I do not deal very graciously in offering mercy and pardon to you upon these conditions. Though your sins be as scarlet, red and bloody, as theirs were, Isaiah 1:15, great and heinous, they shall be as white as snow; they shall be washed and purged by the blood of the Messias, whereby you shall be made white and pure in God's sight. It is a metonymical expression, as sins are said to be purged, Hebrews 1:3, when men are purged from their sins, Hebrews 9:14. Shall be as wool; which for the most part is white, and is compared to snow for whiteness, Revelation 1:14.
Related Commentaries of Isaiah 1:18
Isaiah 1:18
18 Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.