כִּֽי־דֹרֵ֣שׁ דָּ֭מִים אוֹתָ֣ם זָכָ֑ר לֹֽא־שָׁ֝כַ֗ח צַעֲקַ֥ת עניים [עֲנָוִֽים׃]
For He that avengeth blood hath remembered them; He hath not forgotten the cry of the humble.
Read midrashic interpretation of Psalms 9:13: and classical rabbinic exegesis.