The Death of Elisha
14 Now when Elisha had fallen sick with the illness of which he was to die, Joash king of Israel went down to him and wept before him, crying, “My father, my father! The chariots of Israel and its horsemen!” 15 And Elisha said to him, “Take a bow and arrows.” So he took a bow and arrows. 16 Then he said to the king of Israel, “Draw the bow,” and he drew it. And Elisha laid his hands on the king’s hands. 17 And he said, “Open the window eastward,” and he opened it. Then Elisha said, “Shoot,” and he shot. And he said, “The Lord’s arrow of victory, the arrow of victory over Syria! For you shall fight the Syrians in Aphek until you have made an end of them.” 18 And he said, “Take the arrows,” and he took them. And he said to the king of Israel, “Strike the ground with them.” And he struck three times and stopped. 19 Then the man of God was angry with him and said, “You should have struck five or six times; then you would have struck down Syria until you had made an end of it, but now you will strike down Syria only three times.” 
Joash came to the prophet Elisha to looking for a solution to Israel’s enemy and receive the answer. It appears that all the theatrics was not what the king had in mind.
God’s solution to his problem is not an “entitlement”. It will require obedient faith on his part. “Fake Faith” is not a substitute for true faith.
The king of Israel went along with pulling back the bow with “assistance”, leveraging the “strength” of Elisha.
When the king was told to “Strike the ground with them”(v18), Joash struck the ground with the passion of unbelief. The king who was in a do and die situation did not have sincere faith about “striking” the ground. His “fake faith” was a “try a little of this to see if it works but not too much.
Elisha was angry at the king and asked why didn’t you strike the ground 5 or 6 times.
Do we allow our victory over sin that has been given to us in Christ Jesus slip away because of a halfhearted effort by our unbelief?
Listen to what the Holy Spirit says in Hebrews 11:6 (KJV)
6 But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.
 The Holy Bible: English Standard Version. (2001). (2 Ki 13:14–19). Wheaton: Standard Bible Society.