Thanks for your comment Tim. I first wrote this series in 2000 so I'm sure there are items I would revise today! However, I don't think the overall substance would be different. I would add some additional material on the unity of the Covenant of Grace per what was discussed in the recent thread with George Ella.
And if we now cast our eyes over the nations of the earth, we shall find that, instead of possessing the pure religion of the Gospel, they may be divided either into infidels, who deny the truth; or politicians who make religion a stalking horse for their ambition; or professors, who walk in the trammels of orthodoxy, and are more attentive to traditions and ordinances of men than to the oracles of truth.