"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 13:17

If you text-message the word ECONOMIST you type the keys 32666678, where digits 3-5 (third to fifth) are 666, and digits 4-6 are as well. Economists study buying and selling. Perhaps the first occurence is for buying and the second for selling!