The number93is of great significance in Thelema.[93] The central philosophy of Thelema is in two phrases from Liber AL: "do what thou wilt shall be the whole of the law" and "love is the law, love under will". Crowley urged their use in everyday communications, and himself used them to greet people.[46] Today, rather than using the full phrases, Thelemites often use numerological abbreviations to shorten these greeting in informal contexts, a practice Crowley also applied in his informal written correspondences.[46] The two primary terms in these statements are 'will' and 'love', respectively. Using the Greek technique of isopsephy, which applies a numerical value to each letter, the letters of words thelema ('will') and agape ('love') each sum to 93:
Thelema: Θελημα = 9 + 5 + 30 + 8 + 40 + 1 = 93
Agapé: Αγαπη = 1 + 3 + 1 + 80 + 8 = 93
In this way, the first phrase is abbreviated to "93" while the second is abbreviated to "93 93/93", with the division "93/93" symbolizing love "under" will.[46]
https://en.wikipedia.org/wiki/Thelema#Greetings