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

2 Samuel 9:10

Till the land for him—you, your sons, and your servants. Bring in the harvest, that your master’s son may have bread to eat; but Mephibosheth your master’s son will always eat bread at my table.” Now Ziba had fifteen sons and twenty servants.

Read in other translations