1 Peter 3:15-16

But in your hearts revere Christ as Lord. Always be prepared to give an answer to everyone who asks you to give the reason for the hope that you have. But do this with gentleness and respect, keeping a clear conscience, so that those who speak maliciously against your good behavior in Christ may be ashamed of their slander. 

Always be prepared to give an answer 
Colossians 4:6  Let your conversation be always full of grace, seasoned with salt, so that you may know how to answer everyone.

to everyone who asks you to give the reason for the hope that you have 
Hebrews 3:6  But Christ is faithful as the Son over God's house. And we are his house, if indeed we hold firmly to our confidence and the hope in which we glory.
Romans 5:1-2  Therefore, since we have been justified through faith, we have peace with God through our Lord Jesus Christ, through whom we have gained access by faith into this grace in which we now stand. And we boast in the hope of the glory of God.
Hebrews 6:18-19a  God did this so that, by two unchangeable things in which it is impossible for God to lie, we who have fled to take hold of the hope set before us may be greatly encouraged. We have this hope as an anchor for the soul, firm and secure.
Hebrews 11:1  Now faith is confidence in what we hope for and assurance about what we do not see.

But do this with gentleness and respect, keeping a clear conscience 
1 Peter 3:21-22  ... and this water (the flood) symbolizes baptism that now saves you also--not the removal of dirt from the body but the pledge of a clear conscience toward God. It saves you by the resurrection of Jesus Christ, who has gone into heaven and is at God's right hand--with angels, authorities and powers in submission to him.
Acts 23:1  Paul looked straight at the Sanhedrin and said, "My brothers, I have fulfilled my duty to God in all good conscience to this day."

so that those who speak maliciously against your good behavior in Christ may be ashamed of their slander 
1 Peter 2:12  Live such good lives among the pagans that, though they accuse you of doing wrong, they may see your good deeds and glorify God on the day he visits us.
1 Peter 2:15  For it is God's will that by doing good you should silence the ignorant talk of foolish people.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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