What Did Paul Entrust to God “To Keep… until That Day” (2 Tim 1:12)?

For this reason I also suffer these things; nevertheless I am not ashamed, for I know whom I have believed and am persuaded that He is able to keep what I have committed to Him until that Day. After quoting 2 Tim 1:12, Steve asks, What is Paul’s ‘committed thing’ God is able to keep?
