2 Chronicles 15:10

10 And they are gathered to Jerusalem in the third month of the fifteenth year of the reign of Asa,

2 Chronicles 15:10 Meaning and Commentary

2 Chronicles 15:10

So they gathered themselves together at Jerusalem
By the order of Asa, ( 2 Chronicles 15:9 ) ,

in the third month;
of the ecclesiastical year, the month Sivan, in which month was the day of Pentecost; and that very probably was the time of their gathering:

in the fifteenth year of the reign of Asa;
and which seems to be the year in which he fought the Ethiopians.

2 Chronicles 15:10 In-Context

8 And at Asa's hearing these words, and the prophecy of Oded the prophet, he hath strengthened himself, and doth cause the abominations to pass away out of all the land of Judah and Benjamin, and out of the cities that he hath captured from the hill-country of Ephraim, and reneweth the altar of Jehovah that [is] before the porch of Jehovah,
9 and gathereth all Judah and Benjamin, and the sojourners with them out of Ephraim, and Manasseh, and out of Simeon -- for they have fallen unto him from Israel in abundance, in their seeing that Jehovah his God [is] with him.
10 And they are gathered to Jerusalem in the third month of the fifteenth year of the reign of Asa,
11 and sacrifice to Jehovah on that day from the spoil they have brought in -- oxen seven hundred, and sheep seven thousand,
12 and they enter into a covenant to seek Jehovah, God of their fathers, with all their heart, and with all their soul,
Young's Literal Translation is in the public domain.