How did Zachariah find Dean?

The angels can't use their own "angel-magic" to find the brothers, but that doesn't mean they can't use the good, old, HUMAN fashion way. Zachariah told Dean, in the car, that they had been using human informants, they had been making inspiration of buisness with Christian groups, and giving them Dean's image so the groups could keep an eye out. And the bible-freak (as Dean put him) outside the motel had gegeven Dean up to the angels.

Dean asked Zachariah this same thing and Zachariah zei they had to enlist religious humans of the meer "extremist" type to help look for him. Right away Dean remembered the straat preacher outside his hotel who asked him "Have u taken time out to consider God's plan for you?" To which Dean replied "Too freaking much pal.". So obviously Angels had asked these humans to keep an eye out for Dean and meld back his location.

some guy on the straat told zaceria

deansold his sole to the devil witch atomaticlly takes all protection away. if sam could fight for
himmself we wouldnt have to worry.