Paul wrote these things in 2 Timothy 3 about future corruption within the Church:

"There will be terrible times in the last days. People will be lovers of themselves, lovers of money…slanderous…having a form of godliness but denying its power. Have nothing to do with such people."

Of course Paul is talking about many people in the whole passage, but I’m convinced that the specific parts I have put here apply to John MacArthur.
(Maybe there are more parts of the passage that apply to him.)
After you read this thorough indictment, I think you’ll be convinced, too.
Hoarding massive wealth (including huge salaries for his part-time positions), nepotism, unscrupulous business practices, hiding financial records, and hypocrisy.

https://julieroys.com/prosperous-lifestyle-americas-anti-prosperity-gospel-preacher/