Apologetics (form the Greek apologia: a defense) is that branch of Christian theology which seeks to provide a rational
justification for the truth claims of the Christian faith. In addition to serving like the rest of theology in general,
as an expression of loving God with all our minds, apologetics specifically serves to show unbelievers the truth of
the Christian faith, to confirm the faith to believers, and to reveal and explore the connections between Christian
doctrine and other truths.
~ Dr. William Lane Craig, Reasonable Faith, 3rd Ed.