A just vindication of the covenant and church-estate of children of church-members : as also of their right unto bastisme : wherein such things as have been brought by divers to the contrary, especially by Ioh. Spilsbury, A.R. Ch. Blackwood, and H. Den are revised and answered : hereunto is annexed a refutation of a certain pamphlet styled The plain and wel-grounded treatise touching baptism /