You do not have access to that command.

When you do a command and you don't have access to it, it should say "You do not have access to that command" But you see many things like "Error: You don't have enough permissions", You do not have access to that command in colorcode c and 4, No permission, ETC.
It should just say 1 simple sin.
It's not like command blocker
I hope somebody knows what I mean :3

 

This cannot be changed by a plugin. The denied permission sentence is coded in the plugin that you are using.

 

Well, there's a plugin that does that but you need to enter every single command...

 

There is a way to do this. Have you ever heard of the essentials messages.en or something file
One of the messages includes the one you are talking about. I changed mine successfully.
http://wiki.ess3.net/wiki/Locale

 

@tspierer2 yes you can change but its only essentials no permission message.

 

@MacMasterMac
You could try MessageFilter.

 

It kinda works like this, but you've to type every command and that's a waste of time