Suppose someone teaches ideas that are false. He doesn't agree with the true teaching of our Lord Jesus Christ. He doesn't agree with godly teaching.
References for 1 Timothy 6:3
People like that are proud. They don't understand anything. They like to argue more than they should. They can't agree about what words mean. All of that results in wanting what others have. It causes fighting, harmful talk, and evil distrust.
It stirs up trouble all the time among people whose minds are twisted by sin. The truth they once had has been taken away from them. They think they can get rich by being godly.