לְכוּ־נָ֛א וְנִוָּֽכְחָ֖ה יֹאמַ֣ר יְהוָ֑ה אִם־יִֽהְי֨וּ חֲטָאֵיכֶ֤ם כַּשָּׁנִים֙ כַּשֶּׁ֣לֶג יַלְבִּ֔ינוּ אִם־יַאְדִּ֥ימוּ כַתּוֹלָ֖ע כַּצֶּ֥מֶר יִהְיֽוּ׃
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.
Read Jewish philosophical commentary on Isaiah 1:18: and classical philosophical sources.