Commentary for II Chronicles 21:12

וַיָּבֹ֤א אֵלָיו֙ מִכְתָּ֔ב מֵֽאֵלִיָּ֥הוּ הַנָּבִ֖יא לֵאמֹ֑ר כֹּ֣ה ׀ אָמַ֣ר יְהוָ֗ה אֱלֹהֵי֙ דָּוִ֣יד אָבִ֔יךָ תַּ֗חַת אֲשֶׁ֤ר לֹֽא־הָלַ֙כְתָּ֙ בְּדַרְכֵי֙ יְהוֹשָׁפָ֣ט אָבִ֔יךָ וּבְדַרְכֵ֖י אָסָ֥א מֶֽלֶךְ־יְהוּדָֽה׃

And there came a writing to him from Elijah the prophet, saying: ‘Thus saith the LORD, the God of David thy father: Because thou hast not walked in the ways of Jehoshaphat thy father, nor in the ways of Asa king of Judah;

Rashi on II Chronicles