In truth, to be faultless is not easy for human beings. Faultlessness is beyond human possibilities. The order of the angels is itself subject to such weakness. This is what Eliphaz says, “Even in his servants God puts no trust.” It is evident that God “puts no trust” in the righteous—like you, who have trusted yourself—because he knows the weakness of their nature and how easily their flesh falls. The fallen angels give God a reason not to trust in them, those whom “he charges with error.” He has driven them away from the former honor of their rank and has reduced them to a lower position because they had evil thoughts against God. But if it is so for them, who even though they have a weak nature live nonetheless in the heights among the virtuous powers, and if it is so for angels who in their own nature were above us, what will we say about our own human condition, one even more subject to sin? - "Homilies on Job 7.4.18–21"