1 Samuel 6:4

6:4 They inquired, “What is the guilt offering that we should send to him?”

They replied, “The Philistine leaders number five. So send five gold sores and five gold mice, for it is the same plague that has afflicted both you and your leaders.

1 Samuel 17:40

17:40 He took his staff in his hand, picked out five smooth stones from the stream, placed them in the pouch ¹  of his shepherd’s bag, took his sling in hand, and approached the Philistine.

¹ tn This Hebrew word occurs only here and its exact meaning is not entirely clear. It refers to a receptacle of some sort and apparently was a common part of a shepherd’s equipment. Here it serves as a depository for the stones that David will use in his sling.