PE
Text: The 17th Hebrew letter, Pe (P), literally means mouth, and many are the ingenious poetical dissertations extant, scattered through Kabbalistic lore, alike ancient and modern, placing this letter in the gate of Praise. The Divine Word is said to be concealed in the human mouth and the truly initiated utter forth this potential Word when they truly sound the praises of the ALL HOLY. Trough we all understand clearly enough the literal humane injunction not to muzzle an ox which treadth out our corn, by Kabbalists "Muzzle not the mouth of the ox that treadth out thy corn" is treated as a repository of profound esoteric counsel relating to spiritual husbandry, with which external agricultural works truly correspond.
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Source: 72