Because they have cast off their first faith;
or that faith which they first professed, even the doctrine of faith; which they may be said to cast off, because they walked not according to it, their conversation was not becoming their profession of it; and though they continued to profess the same faith they did in words, yet in works they denied it, or cast it off; for which reason they fell under the notice, judgment, and condemnation of the church, as well as exposed themselves to the reproach of men.