Of all the series that I have heard Sinclair Ferguson preach, I think that this was the finest.
You’ll also be interested to know that hundreds of the sermons Dr. Ferguson preached at First Presbyterian Church, Columbia, SC have been added to SermonAudio. This makes it a bit easier to download them than it was at the First Pres. website.

I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve. (Romans 16:17-18)