וָאֹמְרָ֗ה אֱלֹהַי֙ בֹּ֣שְׁתִּי וְנִכְלַ֔מְתִּי לְהָרִ֧ים אֱלֹהַ֛י פָּנַ֖י אֵלֶ֑יךָ כִּ֣י עֲוֺנֹתֵ֤ינוּ רָבוּ֙ לְמַ֣עְלָה רֹּ֔אשׁ וְאַשְׁמָתֵ֥נוּ גָדְלָ֖ה עַ֥ד לַשָּׁמָֽיִם׃
and I said: ‘O my God, I am ashamed and blush to lift up my face to Thee, my God; for our iniquities are increased over our head, and our guiltiness is grown up unto the heavens.
Read halakhic rulings (Jewish law) on Ezra 9:6: and classical halakhic sources.