וְדִבְרֵ֣י רְחַבְעָ֗ם הָרִאשֹׁנִים֙ וְהָאֲ֣חַרוֹנִ֔ים הֲלֹא־הֵ֨ם כְּתוּבִ֜ים בְּדִבְרֵ֨י שְׁמַֽעְיָ֧ה הַנָּבִ֛יא וְעִדּ֥וֹ הַחֹזֶ֖ה לְהִתְיַחֵ֑שׂ וּמִלְחֲמ֧וֹת רְחַבְעָ֛ם וְיָרָבְעָ֖ם כָּל־הַיָּמִֽים׃
르호보암의 시종 행적은 선지자 스마야와 선견자 잇도의 족보책에 기록되지 아니하였느냐 르호보암과 여로보암 사이에 항상 전쟁이 있으니라
Ibn Ezra
In the Book of the Wars of Adonoy. This was a separate Book, in which the Wars of Hashem on behalf of those who fear Him were written. Possibly, it existed in the days of Avraham, for many books were lost and are not extant anymore, such as the words of Nasan and Ido, the Divrei HaYamim of the Kings of Yisroel, the Songs of Shlomo and his Proverbs.