Arikh Anpin — The Long-Suffering Countenance
The most exalted of the Partzufim, corresponding to Keter, depicted as a countenance of pure, inexhaustible patience and compassion closest in nature to Ein Sof itself.
Arikh Anpin translates roughly as 'the Long Face' or, more idiomatically, 'the Patient One' — a name drawn from the biblical phrase for someone 'slow to anger,' since a literally 'long' face was read as the opposite of a face contracted in impatience or rage. As the partzuf built from Keter, Arikh Anpin sits nearest to Ein Sof of any configuration in the Lurianic system, and is sometimes called Atika Kadisha, 'the Holy Ancient One,' language echoing the Zohar's own Idra Rabba and Idra Zuta sections, which describe an ancient, white-haired divine figure in extraordinarily vivid, almost anthropomorphic imagery. Because judgment and severity are understood to originate lower down the sefirotic ladder, Arikh Anpin functions in Lurianic thought as almost pure, unmixed mercy — the source from which every subsequent, more mixed configuration eventually draws whatever compassion it contains. Its role is largely passive and foundational rather than active: it does not intervene directly in the world so much as sustain the possibility of mercy at every lower level.
Arikh Anpin's vivid, quasi-physical description originates in the Zohar's own Idra Rabba, a section so unusual in tone and imagery that scholars have long debated its relationship to the rest of the Zohar's material.