And he gathered all Judah and Benjamin, and the strangers with them out of Ephraim and Manasseh, and out of Simeon: for they fell to him out of Israel in abundance, when they saw that the LORD his God was with him.
He brought together all of Judah and Benjamin, along with non-native people from Ephraim, Manasseh, and Simeon. They joined him because they saw that God was with him in great numbers.