2 they were archers using both the right and left hands to sling stones and shoot arrows; and they were Saul’s kinsmen from Benjamin):
1 Chronicles 12:2 Cross References - MSB
Judges 3:15
15 And again they cried out to the LORD, and He raised up Ehud son of Gera, a left-handed Benjamite, as their deliverer. So they sent him with tribute to Eglon king of Moab.
Judges 20:16
16 Among all these soldiers there were 700 select left-handers, each of whom could sling a stone at a hair without missing.
1 Samuel 17:49
49 Then David reached into his bag, took out a stone, and slung it, striking the Philistine on the forehead. The stone sank into his forehead, and he fell facedown on the ground.
1 Chronicles 12:29
29 From Benjamin, the kinsmen of Saul: 3,000, most of whom had remained loyal to the house of Saul up to that time.