>>4829733 (pb)

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>In Greek Orthodox iconography, as also in early Christian iconography, the gesture of the blessing hand actually shapes the letters IC XC, an abbreviation for the Greek words Jesus (IHCOYC) Christ (XPICTOC) which includes the first and last letter of each word. The hand that blesses reproduces, with gestures, the Name of Jesus, the “Name above every name.”

https://aleteia.org/2016/06/12/what-do-hand-gestures-in-icons-mean/