2 Chronicles 15:9

9 And he gathered all Judah and Benjamin, and those from E'phraim, Manas'seh, and Simeon who were sojourning with them, for great numbers had deserted to him from Israel when they saw that the LORD his God was 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 But you, take courage! Do not let your hands be weak, for your work shall be rewarded."
8 When Asa heard these words, the prophecy of Azari'ah the son of Oded, he took courage, and put away the abominable idols from all the land of Judah and Benjamin and from the cities which he had taken in the hill country of E'phraim, and he repaired the altar of the LORD that was in front of the vestibule of the house of the LORD.
9 And he gathered all Judah and Benjamin, and those from E'phraim, Manas'seh, and Simeon who were sojourning with them, for great numbers had deserted to him from Israel when they saw that the LORD his God was with him.
10 They were gathered at Jerusalem in the third month of the fifteenth year of the reign of Asa.
11 They sacrificed to the LORD on that day, from the spoil which they had brought, seven hundred oxen and seven thousand sheep.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.