I've read in different publications that David was about 17 when defeated,
Goliath, but haven't been able to find any explanation for this calculation.
David was not old enough to be in the army, so he was under 20 (Num
1:1-3,45,46), but why 17?
Thanks
Sergio
[b-hebrew] How old was David?,
Sesamo m., 04/05/2005