What did God tell Ananias about how Paul would suffer?

Les explains that after God commissions Paul to go to the Gentiles, He tells Ananias that this man will suffer great things for His name's sake. On the other hand, Paul tells how much suffering he had caused. Les suggests that every time Paul came under oppression, his first memory may have been what he himself did in opposition, and that God had the perfect candidate to take abuse because he had handed out so much himself. This carried him until the end; Les notes the common belief that Paul was beheaded by the Roman government, and that he read Paul literally ran the last few yards to the chopping block, ready to offer himself.