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Isaiah 1:18
Brenton's English Septuagint · Berean Standard Bible
And come, let us reason together, saith the Lord: and though your sins be as purple, I will make them white as snow; and though they be as scarlet, I will make [them] white as wool.
“Come now, let us reason together,” says the LORD. “Though your sins are like scarlet, they will be as white as snow; though they are as red as crimson, they will become like wool.