מִזְמ֗וֹר לְאָ֫סָ֥ף אַ֤ךְ ט֭וֹב לְיִשְׂרָאֵ֥ל אֱלֹהִ֗ים לְבָרֵ֥י לֵבָֽב׃
Psalm von Assaf. Gütig gegen Israel ist Gott, gegen die, die reinen Herzens sind.
Tractate Derekh Eretz Rabbah
Concerning them who judge in righteousness, who reprove with sincerity, who perform [their daily tasks] in a state of [ritual] cleanliness and who are pure of heart, Scripture, declares, Surely God is good to Israel, even to such as are pure in heart.38Ps. 73, 1.