message time problem after i inactive a user

Hello!
So as my trial group doesn't work on my site, i manually inactive the users after x days. When i inactive a user he get this message after he tries to login:
"You have specified an incorrect or inactive username, or an invalid password." - i would like edit this message. my problem is that this message shows only 2 second, which is too short, and after 2 secs redirecting to login.
So i would like to get that when this message appear, stay there! no redirecting to anywhere!
How can i do that? <img>
So as my trial group doesn't work on my site, i manually inactive the users after x days. When i inactive a user he get this message after he tries to login:
"You have specified an incorrect or inactive username, or an invalid password." - i would like edit this message. my problem is that this message shows only 2 second, which is too short, and after 2 secs redirecting to login.
So i would like to get that when this message appear, stay there! no redirecting to anywhere!
How can i do that? <img>