וּבִשְׁנַת֙ שְׁמֹנֶ֣ה עֶשְׂרֵ֔ה לַמֶּ֖לֶךְ יָרָבְעָ֣ם בֶּן־נְבָ֑ט מָלַ֥ךְ אֲבִיָּ֖ם עַל־יְהוּדָֽה׃
Now in the eighteenth year of king Jeroboam the son of Nebat began Abijam to reign over Judah.
Read halakhic rulings (Jewish law) on I Kings 15:1: and classical halakhic sources.