[Footnote 545: The chapter referred to treats of holy baptism doctrinally, and does not therefore fall within the province of this volume.] 5. The sacraments of order and dignity are Penance, the Eucharist, and Extreme Unction. Of order; because they ought only to be administered by such as are rightly ordained according to the Church's power of the keys; except in necessity, in which one may _confess_ even unto a layman: of necessity; since such as neglect them through contempt of them cannot be saved. About penance, see the sixth book, upon the fifth day of Holy Week, the _Caena Domini_: [Footnote 546] about the Eucharist, we shall speak in the fourth book, upon the Canon; [Footnote 547] about Extreme Unction we have spoken in the preceding chapter. [Footnote 546: What we call _Maunday Thursday_, from _Mandatum novum_ ('A new commandment I give unto you,' etc.), which the Church of England retains as a Lesson for the day, is more properly called _The Caena Domini_, or _Lord's Supper_, in remembrance (as Bishop Andrewes says) _of the mighty mystery of Thy holy body and precious blood, instituted on the evening of this day_.--See S. Isidore, _De Offic. Eccles._ i, 28. The chapter referred to (73 of the sixth book), shows that penitents were restored to communion on this day, and with what ceremonies.] [Footnote 547: These, besides their great length, are not required for the explication of our more immediate subject.] {154} 6. But the sacrament of dignity and choice is Orders: of dignity; because conferred by bishops alone, and because no one is admitted thereunto save a worthy person and in a worthy way: of choice; because anyone may be saved without it. Of this we shall speak in the preface to the second book. [Footnote 548] [Footnote 548: These, besides their great length, are not required for the explication of our more immediate subject.] 7. The sacrament of choice only is matrimony; and it is said to be of choice, because anyone may be saved without it. Indeed a man seeking to marry is not inclined to tend towards the kingdom of heaven.