Gregory the Dialogist

Thou shalt come to thy grave in fulness, like as a shock of corn cometh in in his season. For what is denoted by the name of the grave, saving a life of contemplation? which as it were buries us, dead to this world, in that it hides us in the interior world away from all earthly desires. For they being dead to the exterior life, were also buried by contemplation, to whom Paul said, For ye are dead, and your life is hid with Christ in God. …

Morals on the Book of Job, Book VI ↗

Thomas Aquinas

Sixth, as to the peace and quiet of death he says, "You shall come to your grave in a ripe old age," in prosperity, not despoiled of your property, "like the stock of grain is reaped in due season," as though not anticipated by a sudden and untimely death.

Commentary on Job ↗