1 Chronicles 11:11

And this is the number of the mighty men whom David had; Jashobeam, an Hachmonite, the chief of the captains: he lifted up his spear against three hundred slain by him at one time.

Cross-reference

1 Chronicles 27:2 names Jashobeam as leader of the first monthly division, detailing his later role as one of David's mighty men from 11:11.

In 2 Samuel 23:8, the parallel account records Jashobeam killing 800 instead of 300, showing textual variation.