Matthew 5:14-16 (ESV) 14You are the light of the world. A city set on a hill cannot be hidden. 15Nor do people light a lamp and put it under a basket, but on a stand, and it gives light to all in the house. 16In the same way, let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven.
1 Peter 5:13 (ESV) But 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; yet do it with gentleness and respect.