[Seasonable testimony] [electronic resource] : In four parts. Part I. Humble pleadings with our Mother-Church of Scotland. Part II. Serious expostulations with separtists from it. Part III. Earnest exhortations to all to endeavour to keep the unity of the spirit in the bond of peace. These in the first edition. Part IV. A continuation of this seasonable testimony, in further reasonings and pleadings with the separating brethern and their adberents. The second edition carefully revised, corrected and enlarged throughout; with the addition of a preface and contents, and large continuatution in the fourth part. By Mr. John Williamson minister of the Gospel at Inveresk and Musselborugh.