In 1 Timothy 6:20, Paul tells Timothy to guard what was entrusted to him and to avoid what?

Answer: Irreverent, empty chatter

Paul ends the letter: guard what has been entrusted to you and avoid irreverent, empty chatter and the arguments of so-called 'knowledge.'

“O Timothy, guard what has been entrusted to you. Avoid irreverent, empty chatter and the opposing arguments of so-called “knowledge,””— 1 Timothy 6:20 (BSB)