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

2 Samuel 2:15

Then they arose and went over by number: twelve for Benjamin and for Ishbosheth the son of Saul, and twelve of David’s servants.

Parallel Translations

LXXView canonical →
And there arose and passed over by number twelve of the children of Benjamin, belonging to Jebosthe the son of Saul, and twelve of the servants of David.
Brenton's Septuagint Translation
LXX2012View canonical →
And there arose and passed over by number twelve of the children of Benjamin, belonging to Jebosthe the son of Saul, and twelve of the servants of David.
Septuagint in American English (2012)
KJVView canonical →
Then there arose and went over by number twelve of Benjamin, which pertained to Ish–bosheth the son of Saul, and twelve of the servants of David.
King James Version