Even though people were responding, others opposed his work. Who were these others? It really doesn’t matter if these were people from within or people from without, I suspect the former. There was opposition in the midst of response.
Why is that? I’m not really sure except to say that experience proves a couple of things. When there is opposition in the midst of response, there is a greater reliance on Christ. An open door without opposition promotes self-sufficiency. Resistance isn’t always a bad thing if it drives us to a greater dependency. It also serves as a reminder that we’re in a spiritual battle and our weaponry isn’t physical. Spiritual battles call for spiritual weapons. Don’t forget the spiritual armor when you walk through the open door.