2 Chronicles 15:9

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.

2 Chronicles 15:9 Meaning and Commentary

2 Chronicles 15:9

And he gathered all Judah and Benjamin, and the strangers with
them
The proselytes of the gate:

out of Ephraim and Manasseh, and out of Simeon:
out of all the places in those tribes that had come off to him, or had been taken by him; for otherwise these belonged to the ten tribes under the government of Jeroboam, and his successors, and the next clause explains it:

for they fell to him out of Israel abundance, when they saw that the
Lord his God was with him;
as was clear by the victory he gave him over the Ethiopians; after that time many in the above tribes came over to him; the Targum is,

``when they saw the Word of the Lord his God was his help.''

2 Chronicles 15:9 In-Context

7 and ye, be ye strong, and let not your hands be feeble, for there is a reward for your work.'
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,
Young's Literal Translation is in the public domain.