It is easier to talk with others when everything is going as you want, but what about when things aren't going so great? What should we do then? Jesus said that even difficulty, and maybe especially difficulty, gives us the best opportunity to witness.
Everyone has good things to say about God when things are going good. What one says when things aren't going good is likely a better barometer of their faith. Jesus wanted His disciples to give witness to Him in EVERY SITUATION.
Read it here.