Revelation 13:18, 666(Strong's Greek#5516) chi xi stigma; (Strong's Greek#4742) stigma- a mark pricked in or branded upon the body. To ancient oriental usage, slaves and soldiers bore the name or the stamp of their master or commander branded or pricked(cut) into their bodies to indicate what master or general they be longed to, and there were even some devotee's who stamped themselves in this way with the token of their gods; stigma- mark, puncture especially one made by a pointed instrument; Revelation 19:20-21, Revelation 20:10-15, Revelation 14:8-9, Revelation 13:8, Revelation 17:8