- from the Greek, ap·o·lo·gi·a: a formal defense or justification.
1 Peter 3:15 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,1
1Blue Letter Bible. "Peter's First Epistle - 1 Peter 3 - (ESV- English Standard Version)." Blue Letter Bible. 1996-2013. 8 Apr 2013.