בִּשְׁנַ֛ת שְׁמוֹנֶ֥ה עֶשְׂרֵ֖ה לַמֶּ֣לֶךְ יָרָבְעָ֑ם וַיִּמְלֹ֥ךְ אֲבִיָּ֖ה עַל־יְהוּדָֽה׃
In the eighteenth year of king Jeroboam began Abijah to reign over Judah.
Read Midrashic interpretations of II Chronicles 13:1: rabbinic exegesis from Bereshit Rabbah, Shemot Rabbah and classical Midrash sources, free.