וַיַּשְׁלֵ֥ם יְהוֹשָׁפָ֖ט עִם־מֶ֥לֶךְ יִשְׂרָאֵֽל׃
Quanto ao restante dos atos de Jeosafá, e ao poder que mostrou, e como guerreou, porventura não estão escritos no livro das crônicas dos reis de Judá?
Rashi on I Kings
Yehoshofot made peace with the king of Yisroel. Since there was war between Asa his father and Basha the king of Yisroel, it was necessary to say this.