Why did David need 5 stones to fight Goliath?

David's Sling

Sling and five smooth stones used by David to kill Goliath on a white background

Everyone has heard about the battle between David and Goliath, how David was just a boy, and Goliath was a giant. The best guess of Goliath’s height was 9ft 9inches. (converting cubits to feet is no certain thing.)
David’s chosen weapon was a sling with 5 stones. Have you ever wondered why David decided that he needed 5 stones? Did he think that God was unable to do it with one?
No, the answer is that Goliath had at least four brothers.

In 2 Samuel 21:18-22  It talks about 4 who were killed who were sons of the Giant in Gath. (Goliath’s home) and specifically mentions that one of them was the brother of Goliath.

It stands to reason that if you plan on picking on, or killing someone who has brothers nearby, that you should plan to defend yourself against them as well.

My most commonly used Bible is the 
Apologetics Study Bible
I highly recommend it!

Walk Worthy of God

1 Thessalonians 2:11-12  Apologetics Study Bible
11As you know, like a father with his own children, 12we encouraged, comforted, and implored each one of you to walk worthy of God, who calls you into His own kingdom and glory.

1 Thess. 4:9-12
9 About brotherly love: You don’t need me to write you because you yourselves are taught by God to love one another. 10 In fact, you are doing this toward all the brothers in the entire region of Macedonia. But we encourage you, brothers, to do so even more, 11 to seek to lead a quiet life, to mind your own business, and to work with your own hands, as we commanded you, 12 so that you may walk properly in the presence of outsiders and not be dependent on anyone.

A lot of people seem to think that grace is a license to sin, and walk around in a fashion that gives people no clue that they are a Christian. Many live in sin, are lazy gossips. That is not how to walk in a manner worthy of God!  We are the only Bible that some folks will ever read. If we are not living the way that God wants us to live, where will they go for the truth? Why should they search for it at all when they see Christians living like the devil?
We need to show them a people worth copying . Unless they see Christ in us, that isn’t going to happen.