6 We may take as a type of this distinction, the departure of the children of Israel and the Egyptians from Egypt. For the Egyptians, rejoicing a little while in their injustice against Israel, when they went forth, were all drowned in the deep; but the people of God, being for a time smitten and injured, by the conduct of the taskmasters, when they came out of Egypt, passed through the sea unharmed, and walked in the wilderness as an inhabited place. For although the place was unfrequented by man and desolate, yet, through the gracious gift of the law, and through converse with angels, it was no longer desert, but far more than an inhabited country.
As also Elisha, when he thought he was alone in the wilderness, was with companies of angels; so in this case, though the people were at first afflicted and in the wilderness, yet those who remained faithful afterwards entered the land of promise. In like manner those who suffer temporal afflictions here, finally having endured, attain comfort, while those who here persecute are trodden under foot, and have no good end. For even the rich man, as the Gospel affirms, having indulged in pleasure here for a little while, suffered hunger there, and having drunk largely here, he there thirsted exceedingly.
But Lazarus, after being afflicted in worldly things, found rest in heaven, and having hungered for bread ground from grain, he was there satisfied with that which is better than manna, even the Lord who came down and said, 'I am the bread which came down from heaven, and gives life to mankind.'
Source: Letters (New Advent)