In the letter he wrote to the Colossians, Paul had to deal with a false teaching that scholars often refer to as "the heresy of Colossae." This designation is due to the unique character of the teaching and the fact that it seems to have flourished only in that region. It was a combination of Jewish elements with ascetic and mystical practices—all connected by an incipient Gnosticism. Its supporters had managed to infiltrate the Christian churches in Colossae and probably churches of other cities located in the Lycus River Valley as well. We have no evidence that this sect settled in other places.