Gregory the Dialogist

HISTORICAL INTERPRETATION. Lo, let that night be solitary, let it be worthy of no praise. That night is made solitary, in that it is divided by an eternal separation from the company of the land above. Yet this may be also taken in another sense, viz. that he loses man, whom he had made his fellow in ruin, and that the enemy perishes alone together with his body, while many that he had destroyed are restored by the Redeemer's grace. …

Morals on the Book of Job, Book IV ↗

Thomas Aquinas

Among the nights which find a place in the memories of men, some are not only remembered, but are also celebrated and festive on which people gather together to make merry. He takes this good away from this night saying, "Let that night be lonely." When men come together for things like this on a given night, they do so in praise and celebration of that night because of some important deed which is remembered on that night, as is the case with the faithful when they celebrate the night of the Lord's Resurrection. …

Commentary on Job ↗