Rev 13:16 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads:
Rev 13:17 And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name.
Rev 13:18 Here is wisdom. Let him that hath understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six.
The beast,man of sin,will be in to the occult,nature worship,witchcraft,spiritual evolution through nature,and acknowledges no God,but honors the God of forces,or the power of nature as his God,and will claim to be God by harnessing the power of nature,and obtaining power,evolved,and will share this power with all who follow him.
The occult believes in the power of numbers,and the grouping,timing,and adding of numbers,which they believe will give them more power,or their plan to have more chance for success,and 6 is the number of a man,so the man of sin assigned the number 666,a triple 6 to himself,believing it will give him more power.
chi xi stigma
khee xee stig'-ma
The 22nd, 14th and an obsolete letter (G4742 as a cross) of the Greek alphabet (intermediate between the 5th and 6th), used as numbers; denoting respectively 600, 60 and 6; 666 as a numeral: - six hundred threescore and six.
stigma
stig'-mah
From a primary word στίζω stizō (to “stick”, that is, prick); a mark incised or punched (for recognition of ownership), that is, (figuratively) scar of service: - mark.