Bold vs. Presumptuous
I've always felt bad for the king here: how did he know he was supposed to strike five or six times? Why not three? Why not thirty? Wouldn't it have been just as likely that, like being struck down for reaching out to steady the Ark, Elisha could've been upset that the king struck too many times and didn't "put his faith in God"?
2 Kings 13:18-19 ESV
"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. 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.""
See it at Bible.com: