King James Version (KJV) Authorized Version 1611
Read Full Chapter (Revelation 13)

Revelation 13:20 KJV

"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."
Revelation Chapter 13, Verse 20

Revelation 13:20 in Context (Verses 17–18 KJV)

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.
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.