Gregory the Dialogist

HISTORICAL INTERPRETATION. Let darkness and the shadow of death stain it. By 'the shadow of death,' we must understand 'oblivion,' for as death ends life, so oblivion puts an end to memory. As therefore the apostate Angel is delivered over to eternal oblivion, he is overclouded with the shadow of death. Therefore let him say, Let darkness and the shadow of death stain it; i.e. 'So let him be overwhelmed with the blindness of error, that he never more rise up again to the light of repentance by recollection of God's regard. …

Morals on the Book of Job, Book IV ↗

Thomas Aquinas

Second, from the interposition of clouds or things like this which hide the rays of the sun. The text means this when it says, "Let gloom claim it." Third, when the subject himself lacks the power of sight, since when someone is dead or deprived of sight, the clarity of the sun is taken away from him. The next verse expresses this, "and the shadow of death." Job explains two ways which can produce the aforementioned darkness. …

Commentary on Job ↗