The Blackabys point out how Paul used his circumstances to continually witness to Jesus (Experiencing God p 177) When someone gives me the “prosperity Gospel” nonsense, Paul is the first person I refer them to. If Paul isn’t the greatest Christian in history he’s in the top five. Yet Paul suffered a lot during his ministry. He was regularly jailed, beaten. He often went without food and water. He was shipwrecked and just generally subjected to harassment and abuse. But he didn’t lash back about those circumstances but used them to demonstrate his faith in Jesus and what Jesus did through Paul. He witnessed to mobs who wanted to abuse him, he witnessed to others jailed with him, to those who were judging him. Paul really never tried to defend himself when Festus was judging him, only witnessing to Jesus to the point where Festus says that Paul almost had Festus convinced of Jesus.
Certainly our witness is much more effective when people see us living our life in Jesus. Sometimes they’re not always seeing the best, but maybe they need to see that side also. Maybe they need to be assured that to be a Christian does not mean that you have to be perfect. Let people see Jesus in you and what that means in real life, wether that is as Paul points out in prosperity or in need. How is God going to use the circumstances that you are dealing with in order to bring someone to salvation in His Son Jesus Christ? What better service could you do then be God’s instrument to bring someone else to salvation?