Revelation 13:18

English Standard Version

18 This calls for wisdom: let the one who has understanding calculate the number of the beast, for it is the number of a man, and his number is 666.[1] (Re 17:9; Re 21:17)

New International Version

18 This calls for wisdom. Let the person who has insight calculate the number of the beast, for it is the number of a man.[1] That number is 666.

New International Reader’s Version

18 This problem requires wisdom. Anyone who is wise should figure out what the beast’s number means. It is the number of a man. And that number is 666.

King James Version

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.