“All bets are off” is an American idiom of speech that, according to Oxford Languages, means the outcome of a situation is unpredictable.  The Merriam-Webster dictionary states the idiom is used to describe a situation in which it is impossible to be sure about what will happen. It could mean “anything can happen.”

Matthew 28:1-7a; 16:17-19

Philippians 3:10-11

Romans 8:29