The necessity and divine excellency of a life of purity and holiness, set forth with pathetic energy, by an eminent minister of the Gospel amongst the people called Quakers. ; In seven discourses and three prayers, and an epistle to his brethren in religious profession in the island of Tortola. Now collected and re-published, that the instructive and important truths therein contained, may be spread and become more generally useful. ; [One line from John]