Job 4:18

"If he does not believe evil against his servants. This is what happened when Elijah said, "Lord, they have killed your prophets; He replied, "I have reserved for myself seven thousand men." Not that these seven thousand men were already pure. This was said of angels and prophets. "And in his angels he found" evil; Or because the evil was spoken against them, or because they said it themselves. This can be understood even good angels.

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?

Behold, His servants are not stedfast, and in His Angels He found folly: How much more in them that dwell in houses of clay, whose foundation is in the dust, which shall be consumed as by the moth? Though the Angelical nature, by being fixed in contemplation of the Creator, remains unchangeable in its own state, yet hereby, that it is a created being, it admits in itself the variableness of change. Now to be changed is to go from one thing into another, and to be without stability in one's self. For every single being tends to some other thing by steps, as many in number as it is subject to motions of change. And it is only the Incomprehensible Nature, which knows not to be moved from its fixed state, in that It knows not to be changed from this, that It is always the Same. For if the essence of the Angels had been strange to the motion of change, being created well by its Maker, it would never have fallen in the case of reprobate spirits from the tower of its blessed estate. But Almighty God in a marvellous manner framed the nature of the highest spiritual existences good, yet at the same time capable of change; that both they, that refused to remain, might meet with ruin, and they, that continued in their own state of creation, might henceforth be stablished therein more worthily in proportion as it was owing to their own choice, and become so much the more meritorious in God's sight, as they had staid the motion of their mutability by the stablishing of the will. Whereas then this very Angelical nature too is in itself mutable, which same mutability it has hereby overcome, in that it is bound by the chains of love to Him, Who is ever the Same, it is now rightly said, Behold, His servants are not stedfast. And there is forthwith added a proof of this same mutability, in that it is brought in from the case of the apostate spirits, And in His Angels He found folly. And from the fall of these He rightly draws the consideration of human frailty, when he appends thereto; How much more in them that dwell in houses of clay, whose foundation is earthly, which shall be consumed as by the moth. For we inhabit houses of clay, in that we subsist in earthly bodies. Which Paul considering saith well; But we have this treasure in earthen vessels. And again, For we know that if our earthly house of this tabernacle were dissolved, we have a building of God, an house not…