David's past experience of being delivered by God from his past enemies (i.e. paw of the lion, paw of the bear) enabled David to be so confident in God's deliverance from Goliath.
Ndele okudja eshi Juda sha li sha hanaunwa po, kapa li vali ohamba yomepata laDavid ya li tai ka pangela fiyo osheshi Omuxupifi, Messias omuudanekwa a hovela okupangela.