Psalms 35:12 Midrash

יְשַׁלְּמ֣וּנִי רָ֭עָה תַּ֥חַת טוֹבָ֗ה שְׁכ֣וֹל לְנַפְשִֽׁי׃

They repay me evil for good; Bereavement is come to my soul.

Read midrashic interpretation of Psalms 35:12: and classical rabbinic exegesis.