בִּשְׁנַ֨ת שְׁלֹשִׁ֤ים וָשֵׁשׁ֙ לְמַלְכ֣וּת אָסָ֔א עָלָ֞ה בַּעְשָׁ֤א מֶֽלֶךְ־יִשְׂרָאֵל֙ עַל־יְהוּדָ֔ה וַיִּ֖בֶן אֶת־הָרָמָ֑ה לְבִלְתִּ֗י תֵּ֚ת יוֹצֵ֣א וָבָ֔א לְאָסָ֖א מֶ֥לֶךְ יְהוּדָֽה׃
In the six and thirtieth year of the reign of Asa, Baasa king of Israel went up against Judah, and built Ramah, that he might not suffer any to go out or come in to Asa king of Judah.
Read midrashic interpretation of II Chronicles 16:1: and classical rabbinic exegesis.