Those who have studied the Renaissance Latin text known as the Picatrix, and those who have studied the more ancient Arabic text – Ghayat al-ḥakim – on which it is based, will be aware of three things.
First, that describing either book as an “astrological” text is a mistake, given (i) what the term astrology now denotes, such as the making of natal charts, and the writing of horoscopes based on Zodiacal constellations; and given (ii) that the classical Latin term astrologia denoted the Art (scientia) of knowing and understanding celestial objects – the stars and planets – and how these objects might affect mortals given that for ancient Greek and Roman philosophers we mortals were considered as connected to, as part of, the cosmic order, κόσμος.
Second, that the subject of Ghayat al-ḥakim – and thus of the Picatrix – is this connection and how a knowledge and understanding of the seven planets, of the Zodiacal constellations, and the relation between them, was a means whereby wisdom – an understanding of the cosmos, and of ourselves – could be attained. Which understanding was of The Unity, the Monas, behind all things.
Third, how a septenary system permeates those two books.