Greg Koukl Effectively Defends Marriage

For a while now, I've been meaning to call attention to the podcast of the July 3, 2011 "Stand to Reason" program, hosted by Greg Koukl. The podcast is nearly three hours long. Towards the end of the first hour, the issue of neutering marriage comes up, and much of the rest of the program deals with that, per the callers.

Koukl's commentaries are:
Are Christianity and Patriotic Expressions Compatible?
Is America a Christian Nation?
Atheists: Freedom from Religion

The caller topics are:

What is the difference between objective and situational ethics?
How can we move the public debate on same-sex marriage to the merits of the argument instead of slogans?
Same-sex marriage is fair.
Does the Bible teach relativism?
In favor of same-sex marriage
The definition of marriage has changed and should continue to change.
Why do Christians not observe the Sabbath on Saturday?
Americans shouldn't be forced to accept same-sex marriage.
Will same-sex marriage lead to polygamy?
How can we know what the Holy Spirit is teaching us?

Here's the MP3.

Here is a larger file version, the Enhanced Podcast (AAC format - chapters and higher-res audio).

Here is the M3U format.

Koukl is fond of using sound reasoning and logic, and does so effectively in the defense of marriage.