It was remarkable that just a few minutes earlier,
Peter had spoken a revelation but had now come
under the influence of Satan and had become his
tool to such that Jesus had to answer him, calling
him Satan.

This shows how some ministers may speak great
truths under the anointing of the Holy Spirit, and
yet when human pride or carnal bias comes over
their thinking, they do the works of Satan and
may not be aware of it.