A sacramental catechism, designed for communicants old and young. [electronic resource] : Wherein it is essayed to explain, the doctrine of the two covenants; the offices which Christ executes with reference to the covenant of grace, both as to the making, and administration of it; and the different estates wherein he executes these offices: as also, an explication of the two sacraments, the supper.--Together with the method of preparation for, behaviour at, and after-improvement of that ordinance. In a plain, concise, and scriptural manner. To which is subjoined, an abstract of that solemn mode of public admission of young communicants to the Lord's table, which has been practised in the Parish of Kilmarnock, almost since the revolution. By James Oliphant, A.M. minister of the Gospel, Kilmarnock. Entered in stationers hall.