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

1 Samuel 17:12

[And David son of an Ephrathite said, this Ephrathite was of Bethleem Juda, and his name was Jessae, and he had eight sons. And the man passed for an old man among men in the days of Saul. ]

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