1 Samuel 3:19 So Samuel grew, and the Lord was with him and let none of his words fall to the ground.
When water falls to the ground it is not much use for drinking anymore; the earth will swallow it up and that is the end of your drinking water!
But Samuel was wise with the word he learned from God and with the instruction he got from God; he did not allow it to go to waste but used every word wisely.
When we hear God’s word from others we too should use them wisely and save them for when they are needed; remembering them and bringing the forward when required.