He won't ask you to do more than you are able to do. But he may stretch you to your limits. He wants every Christian to witness or testify and make it a part of their lifestyle. We can overcome our fears and obey, by God's grace. One big fear we face is the fear of rejection.
Rejection is hard to handle.
We all have a need to feel loved and accepted. But if we witness consistently, we will experience rejection. People can be neither loving nor accepting, at times. But this was the way it was with Jesus. We are privileged to share some of what he went through when he was on earth.