Jamieson, Fausset and Brown on 1 Chronicles 11:22

22. Benaiah ... of Kabzeel--a town in the south of Judah (Jos 15:21; Ne 11:25). It is said that "he had done many acts," though three only are mentioned as specimens of his daring energy and fearless courage.

slew two lionlike men of Moab--literally, "lions of God," that is, great lions or champions. This gallant feat was probably achieved in David's hostile invasion of Moab (2Sa 8:2).

also he went down and slew a lion in a pit in a snowy day--probably a cave into which Benaiah had taken refuge from the snowstorm, and in which he encountered a savage lion which had its lair there. In a spacious cave the achievement would be far greater than if the monster had been previously snared or cabined in a pit.