אִם־הִתְרָחַ֥צְתִּי במו־[בְמֵי־] שָׁ֑לֶג וַ֝הֲזִכּ֗וֹתִי בְּבֹ֣ר כַּפָּֽי׃
If I wash myself with snow water, And make my hands never so clean;
Read Midrashic interpretations of Job 9:30: rabbinic exegesis from Bereshit Rabbah, Shemot Rabbah and classical Midrash sources, free.