2 Chronicles 15:10

They gathered themselves at Jerusalem, in the third month Namely, of the sacred year, in which month the feast of weeks, or of pentecost fell; in the fifteenth year of Asa Asa had peace ten years, (2 Chronicles 14:1,) after which, probably, there were some bickerings and skirmishes, which seem to have been composed; and after that, Zerah came against him and was discomfited. Upon this great success, many of the Israelites fell to him, and in the fifteenth year he called this assembly.