Charles Spurgeon Commentary 2 Peter 2:3-4

"And in covetousness shall they with feigned words make merchandise of you: whose sentence now from of old lingereth not, and their destruction slumbereth not. For if God spared not angels when they sinned, but cast them down to hell, and committed them to pits of darkness, to be reserved unto judgment;" — 2 Peter 2:3-4 (ASV)

If God spared not the angels that sinned, he will not spare any who sin, however high their position may be; even though they are the angels of the churches, he will cast them down to hell.