Finger
Pointing the finger is magic power, or an insult; a finger to the mouth indicates silence or thought or a warning. Fingers raised in benediction convey spiritual power. Two fingers raised depict teaching or judging. Raising three fingers in blessing represents the Trinity. From: An Illustrated Encyclopaedia of Traditional Symbols (J.C. Cooper)
Songs referenced:
Crucify
Wrapped
Around Your Finger
(cover)