Seal of God

The Sigillum Dei (seal of God, or signum dei vivi, symbol of the living God, called by John Dee the Sigillum Dei Aemeth) was a late Middle Ages magical diagram, composed of two circles, a pentagram, and three heptagons, and is labeled with the name of God and his angels. It was an amulet (amuletum) with the magical function that, according to one of the oldest sources (Liber iuratus), allowed the initiated magician to have power over all creatures except Archangels, but usually only reserved for those who can achieve the blessed vision of God and angels (beatific visionary).

Probably the oldest known description and image of the Sigillum Dei is the 14th Century Liber Juratus (also Liber sacratus, Liber sacer sive Juratus, or Sworn Booke), attributed to Honorius, son of Euclid. This may have been produced in the late 13th century, but likely not before the time of Pope John XXII. (1316–1334).

The description of the seal in the Liber Juratus begins with the dimensions of the circle surrounding the outside in relation to common symbol figures of the Christian tradition.

make first a circle whose diameter is three fingers, because of the three cross-nails of the Lord, or five fingers because of the five wounds of Christ, or seven for the seven sacraments, or nine for the nine orders of angels, but usually five fingers will suffice. Then make a second within this circle, let it be a distance from the first two grains because of the two Tablets of the Law of Moses, or three grains because of the persons of the Trinity.

The so created circular band will be at an apex of a small cross and from this starting point proceed from left to right 72 Latin letters, which vary in tradition (MS Sloane 3853: h, t, o, e, x, o, r, a, b, a, s, la, y, q, c, i, y, s, t, a, l, g, a, a, o, n, o, s, v, l, a, r, y, c, e, k, s, p, f, y, o, m, e, n, e, a, u, a, r, e, l, a, t, e, d, a, t, o, n, o, n, a, o, y, l, e, p, o, t, m, a), the sum forming the Shemhamphorasch, the ineffable name of God ("magnum nomen Domini Semenphoras licterarum 72"), showing a clear link to Jewish tradition.

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