Few pastors leave as indelible a legacy as Thomas Witherow did in the north of Ireland during the second half of the nineteenth century. A faithful minister, husband, father, author, and professor, Witherow's defense of Presbyterianism remains one of the most influential of its kind. Collecting Witherow's most important works on the topic_The Apostolic Church, Scriptural Baptism, and The Sabbath_this volume presents a cohesive, trenchant, and imitable apology for the Presbyterian tradition. Preceding the three works is A Prince of Irish Presbyterianism, a new and illuminating biography of Witherow by volume editor Jonathan Gibson.