Making a Defense by Rick Wade
Apologetics has grown into a very involved discipline over the last two millennia. From the beginning, Christians have sought to answer challenges to their claims about Jesus and complaints and questions about how they lived. Those challenges have changed over the years, and apologetics has become a much more sophisticated endeavor than it was in the first century.
The Scripture passage most often used to justify apologetics is 1 Peter 3:15: "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." This verse is probably used so often because it sounds like marching orders. Other Scriptures show us defense in action; this one tells us to do it.
The word translated "defense" here is apologia which is a term taken from the legal world to refer to the defense a person gave in court. It is one of several words used in Scripture that carry legal connotations. Some others are witness, testify and testimony, evidence, persuade, and accuse.