Stand to Reason is a Christian ministry run by Greg Koukl - an author and blogger in Los Angeles, California. The ministry was founded in 1993 to "to help believers 'think more clearly' about" and defend their faith. Its most prominent aspect is a radio talk show of the same name.
Greg Koukl is known for his popular defenses of various doctrines of Christianity and also well known for being an advocate of the Pro-Life position. He is also an outspoken critic of moral and philosophical relativism.
Koukl is often paired with many contemporary conservative Christian thinkers such as J.P. Moreland, Hugh Hewitt, and William Lane Craig. He currently broadcasts his call-in radio show Stand To Reason out of AM-740 in Avalon, CA every Sunday from 3:00pm to 5:00pm.