And he said, Take the arrows. And he took them. And he said unto the king of Israel, Smite upon the ground. And he smote thrice, and stayed. 2 Kings 13:18 KJV
Anything worth doing is worth doing right. What we’re commissioned by God to do is worth doing.
What God tells us to do, we should do with all of our heart.
Had Joash fullfilled what Elisha spoke to him he would have had complete victory over his enemies but his half-hearted response only gave him a partial and temporary victory.
And the man of God was wroth with him, and said, Thou shouldest have smitten five or six times; then hadst thou smitten Syria till thou hadst consumed it: whereas now thou shalt smite Syria but thrice. 2 Kings 13:19 KJV
Whatsoever He says to you do it with all your heart and strength.