1 Samuel 17:38-40

Verse 38

Saul armed David - He knew that although the battle was the Lord's, yet prudent means should be used to secure success.
Verse 39

I cannot go with these - In ancient times it required considerable exercise and training to make a man expert in the use of such heavy armor; armor which in the present day scarcely a man is to be found who is able to carry; and so it must have been then, until that practice which arises from frequent use had made the proprietor perfect. I have not proved them says David: I am wholly unaccustomed to such armor and it would be an encumbrance to me.
Verse 40

He took his staff - What we would call his crook.

Five smooth stones -

1. Had they been rough or angular, they would not have passed easily through the air, and their asperities would, in the course of their passage, have given them a false direction.

2. Had they not been smooth, they could not have been readily despatched from the sling.

A shepherd's bag - That in which he generally carried his provisions while keeping the sheep in the open country.

And his sling - The sling, both among the Greeks and Hebrews, has been a powerful offensive weapon. See what has been said on Jdg 20:16 (note). It is composed of two strings and a leathern strap; the strap is in the middle, and is the place where the stone or bullet lies. The string on the right end of the strap is firmly fastened to the hand; that on the left is held between the thumb and middle joint of the fore finger. It is then whirled two or three times round the head; and when discharged, the finger and thumb let go their hold of the left end string. The velocity and force of the sling are in proportion to the distance of the strap, where the bullet lies, from the shoulder joint. Hence the ancient Baleares, or inhabitants of Majorca and Minorca, are said to have had three slings of different lengths, the longest they used when the enemy was at the greatest distance; the middle one, on their nearer approach; and the shortest, when they came into the ordinary fighting distance in the field. The shortest is the most certain, though not the most powerful. The Balearians are said to have had one of their slings constantly bound about their head, to have used the second as a girdle, and to have carried the third always in their hand. See Diod. Sic. lib. v., c. 18, p. 286, edit. Bipont.

In the use of the sling it requires much practice to hit the mark; but when once this dexterity is acquired, the sling is nearly as fatal as the musket or bow; see on 1Sam 17:49 (note). David was evidently an expert marksman; and his sling gave him greatly the advantage over Goliath; an advantage of which the giant does not seem to have been aware. He could hit him within any speaking distance, if he missed once, he had as many chances as he had stones; and after all, being unencumbered with armor, young, and athletic, he could have saved his life by flight. Against him the Philistine could do but little, except in close fight; it is true he appears to have had a javelin or missile spear, (see on 1Sam 17:6 (note)), but David took care to prevent the use of all such weapons, by giving him the first blow.
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