During the days when the tribe of Benjamin committed great evil, the Bible makes this significant statement about seven hundred Benjamites,
And from their cities at that time the children of Benjamin numbered twenty-six thousand men who drew the sword, besides the inhabitants of Gibeah, who numbered seven hundred select men. Among all this people were seven hundred select men who were left-handed; every one could sling a stone at a hair’s breadth and not miss (Judges 20.15–16).
At first glance, we might be tempted to see significance in seven hundred men who could sling a stone at a hair and not miss, and perhaps there had been some significance in the past, but at this point in Israel’s history, evil things happened in the tribe of Benjamin. Therefore, although it appears significant that seven hundred left-handed Benjamites could sling a stone at a hair, we deem it an incidental reference since the Bible does not really make this special, and since they were defending evil.