Ignatius of Antioch Visible Quotations

I have many deep thoughts in God, but I take my own measure, lest I perish by boasting... For I myself, though I am in chains and can comprehend heavenly things, the ranks of the angels and the hierarchy of principalities, things visible and invisible, for all this I am not yet a disciple.

Even the heavenly powers and the angels in their splendor and the principalities, both visible and invisible, must either believe in the Blood of Christ, or else face damnation.