The disciples were all called to preach the gospel. Not everyone in the church is similarly gifted.

(1 Corinthians 12:27-28 NIV) Now you are the body of Christ, and each one of you is a part of it. {28} And in the church God has appointed first of all apostles, second prophets, third teachers, then workers of miracles, also those having gifts of healing, those able to help others, those with gifts of administration, and those speaking in different kinds of tongues.

Still, if you have an opening to share your faith with someone, take it.