Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX

1 Chronicles 9:19

And Sellum the son of Core, the son of Abiasaph, the son of Core, and his brethren belonging to the house of his father, the Corites [were] over the works of the service, keeping the watches of the tabernacle, and their fathers over the camp of the Lord, keeping the entrance.

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