וַיֵּֽאָסְפ֤וּ יְרוּשָׁלִַ֙ם֙ עַם־רָ֔ב לַעֲשׂ֛וֹת אֶת־חַ֥ג הַמַּצּ֖וֹת בַּחֹ֣דֶשׁ הַשֵּׁנִ֑י קָהָ֖ל לָרֹ֥ב מְאֹֽד׃
And there assembled at Jerusalem much people to keep the feast of unleavened bread in the second month, a very great congregation.
Read kabbalistic (mystical) interpretation of II Chronicles 30:13: and classical mystical sources.