Some of the arrangements of Latin words, with the music wedded to them in Christian worship, cause the most marked effects in the supra-physical worlds, and any one who is at all sensitive will be conscious of peculiar effects caused by the chanting of some of the most sacred sentences, especially in the Mass. Vibratory effects may be felt by any one who will sit quiet and receptive as some of these sentences are uttered by priest or choristers. And at the same time effects are caused in the higher worlds directly affecting the subtle bodies of the worshippers in the way above described, and also appealing to the Intelligences in those worlds with a meaning as definite as the words addressed by one person to another on the physical plane, whether as prayer or, in some cases, as command. The sounds, causing active flashing forms, rise through the worlds, affecting the consciousness of the Intelligences residing in them, and bringing some of them to render the definite services required by those who are taking part in the church office. Such mantras form an essential part of every Sacrament. The next essential part of the Sacrament, in its outward and visible form, are certain gestures. These are called Signs, or Seals, or Sigils--the three words meaning the same thing in a Sacrament. Each sign has its own particular meaning, and marks the direction imposed on the invisible forces with which the celebrant is dealing, whether those forces be his own or poured through him. In any case, they are needed to bring about the desired result, and they are an essential portion of the sacramental rite. Such a sign is called a "Sign of Power," as the mantra is a "Word of Power."