Psalms 119:172 Midrash

תַּ֣עַן לְ֭שׁוֹנִי אִמְרָתֶ֑ךָ כִּ֖י כָל־מִצְוֺתֶ֣יךָ צֶּֽדֶק׃

Let my tongue sing of Thy word; For all Thy commandments are righteousness.

Read midrashic interpretation of Psalms 119:172: and classical rabbinic exegesis.