[Endoperez]

"Judges 20:16
Among all these soldiers there were seven hundred chosen men who were left-handed, each of whom could sling a stone at a hair and not miss."

"1 Chronicles 12:2
they were armed with bows and were able to shoot arrows or to sling stones right-handed or left-handed; they were kinsmen of Saul from the tribe of Benjamin):"

I searched for 'sling' in BibleGateway.com - that's the two mentions of slings in warfare. I have read elsewhere, but can't cite any sources, that some tribe of Israelites (probably tribe of Benjamin) were extraordinarily good with slings, and perhaps ranged weapons in general.

I would rather not have a David hero, precisely because everyone knows the story of a peasant-slinger. Very few realize sling was actually quite deadly weapon. As a hobbyist-slinger, I'd rather have sling respeceted for the power it really had (better range than shorbows of the time, for one), and not remembered as the toy that divine power magically transformed into a weapon.

As an interesting variation, what if most heroes had a double-edged power(s), or they were described as such? All men fall, and were punished. Job would make a good hero, IMO. He raises dominion, but causes bad events to happen - on the other hand, he can be an awesome preacher, even prophet, but on the other hand, you don't want him on your important provinces.