שת [שַׁתָּ֣ה] עֲוֺנֹתֵ֣ינוּ לְנֶגְדֶּ֑ךָ עֲ֝לֻמֵ֗נוּ לִמְא֥וֹר פָּנֶֽיךָ׃
Thou hast set our iniquities before Thee, Our secret sins in the light of Thy countenance.
Read kabbalistic (mystical) interpretation of Psalms 90:8: and classical mystical sources.