Commentary for II Chronicles 13:5

הֲלֹ֤א לָכֶם֙ לָדַ֔עַת כִּ֞י יְהוָ֣ה ׀ אֱלֹהֵ֣י יִשְׂרָאֵ֗ל נָתַ֨ן מַמְלָכָ֧ה לְדָוִ֛יד עַל־יִשְׂרָאֵ֖ל לְעוֹלָ֑ם ל֥וֹ וּלְבָנָ֖יו בְּרִ֥ית מֶֽלַח׃ (ס)

ought ye not to know that the LORD, the God of Israel, gave the kingdom over Israel to David for ever, even to him and to his sons by a covenant of salt?

Rashi on II Chronicles