Gary responds to a recent article by Christian apologist Greg Koukl about Christians being involved in culture and politics. Koukl strangely recommends not using Scripture to make arguments in moral debates, but instead using "common grace and natural revelation." Gary points out that this is a) nothing new, and b) begging the question because who gets to define what's "common" or "natural"? It's essentially every man for himself.
Greg Bahnsen's book, By This Standard, can be found here: https://store.americanvision.org/products/by-this-standard-the-authority-of-gods-law-today