Seeing Prayer and singing Psalms are things Essential to Piety, our Discipline doth justly prescribe the Manner and Means to do it as becometh, and to declare those worthy of sensure which shall transgress their Ordi∣nance.
It requires the same thing in the time of celebrating the Sacraments, and in desiring it, it nothing differs from the practice of the Antient Church, which had so great Respect for Baptism and the Lords Supper, that it suffer'd not the Catechumeny, Energumeny, or Penitents, to be present at celebration of one or the other, calling them both Terrible Misteries.