The number seven is a very strong number. Its planet is Neptune and the constellation of Libra corresponds to it.
Its musical note is Si, bronze is its metal, and its stone is opal.
Its color is magenta (a blue color, almost violet, almost like steel). All the nadis or nerve canals belong to this number.
The number seven is guarded by two hundred and forty-eight precepts. We will progress in proportion to our comprehension of these two hundred and forty-eight precepts. The Seventh Arcanum is Triumph, and the one who triumphs sees the Astral Light and is practically Self-realized.
If we add 248 into itself, we get 2 + 4 + 8 = 14, and 1 + 4 = 5.
The two hundred and forty-eight precepts are reduced to the Fourteenth Arcanum of Kabbalah, which is Temperance, a woman who mixes the two waters of two urns, meaning mixing the white elixir with the red elixir of life, of Alchemy; in other words, the work with the Sun and with the Moon, the work of transmutation.
The number five is the perfect Self-realized flaming star, but the number seven is the number of victory; it has two hundred and forty-eight precepts of an affirmative type. One has to comprehend the two hundred and forty-eight precepts in order to attain victory over oneself and to achieve seeing the Astral Light.
Here we find the effort of the soul, action, image, answer, or result. The number seven is the arcanum of victory; the two hundred and forty-eight precepts are reduced to the Fifth Arcanum, which is none other than the resplendence, the flaming star, the star of divinity.
The number seven is efficiency, integrity, concentration, clemency, longing for an ascendent life.