 Create a safe environment for discussion in your home. You won't know all the answers to the questions they may have, and that's okay. Be honest and willing to dig into God's Word together to talk through things. Their conversations with you can go a long way to help them be comfortable in sharing their faith with others. In 1 Peter 3, 15, it says, In your hearts, honor Christ the Lord as holy, always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you. You do it with gentleness and respect.