In all religions there exist certain ceremonials, or rites, which are regarded as of vital importance by the believers in the religion, and which are held to confer certain benefits on those taking part in them. The word Sacrament, or some equivalent term, has been applied to these ceremonials, and they all have the same character. Little exact exposition has been given as to their nature and meaning, but this is another of the subjects explained of old in the Lesser Mysteries.

The peculiar characteristic of a Sacrament resides in two of its properties. First, there is the exoteric ceremony, which is a pictorial allegory, a representation of something by actions and materials--not a verbal allegory, a teaching given in words, conveying a truth; but an acted representation, certain definite material things used in a particular way. The object in choosing these materials, and aimed at in the ceremonies by which their manipulation is accompanied, is to represent, as in a picture, some truth which it is desired to impress upon the minds of the people present. That is the first and obvious property of a Sacrament, differentiating it from other forms of worship and meditation. It appeals to those who without this imagery would fail to catch a subtle truth, and shows to them in a vivid and graphic form the truth which otherwise would escape them. Every Sacrament, when it is studied, should be taken first from this standpoint, that it is a pictorial allegory; the essential things to be studied will therefore be: the material objects which enter into the allegory, the method in which they are employed, and the meaning which the whole is intended to convey.

Esoteric Christianity, or The Lesser Mysteries — Part 113

The second characteristic property of a Sacrament belongs to the facts of the invisible worlds, and is studied by occult science. The person who officiates in the Sacrament should possess this knowledge, as much, though not all, of the operative power of the Sacrament depends on the knowledge of the officiator. A Sacrament links the material world with the subtle and invisible regions to which that world is related; it is a link between the visible and the invisible. And it is not only a link between this world and other worlds, but it is also a method by which the energies of the invisible world are transmuted into action in the physical; an actual method of changing energies of one kind into energies of another, as literally as in the galvanic cell chemical energies are changed into electrical. The essence of all energies is one and the same, whether in the visible or invisible worlds; but the energies differ according to the grades of matter through which they manifest. A Sacrament serves as a kind of crucible in which spiritual alchemy takes place. An energy placed in this crucible and subjected to certain manipulations comes forth different in expression. Thus an energy of a subtle kind, belonging to one of the higher regions of the universe, may be brought into direct relation with people living in the physical world, and may be made to affect them in the physical world as well as in its own realm; the Sacrament forms the last bridge from the invisible to the visible, and enables the energies to be directly applied to those who fulfil the necessary conditions and who take part in the Sacrament.

Esoteric Christianity, or The Lesser Mysteries — Part 113