Consider Joseph and his time in Eqypt, and Daniel while he was in Babylon, both revealed their character to their pagan masters. Their difficulties caused the presence of God to be manifested through them.
Learning of them and their lives, helps us to underdstand that troubles in life are normal. It is our response to trouble that will manifest Christ to the world - or not. And in thinking on this, they remind us of these words from Paul's writings - and yes, he too had his troubles in life as well.
"Therefore, having being justified by faith, we have peace with God through our Lord Jesus Christ, through whom also we have access by faith into this grace in which we stand,
and rejoice in hope of the glory of God." Romans 5:1-2