Gregory the Great — as excerpted in the Catena Aurea on Matthew 20:1-16

“(ubi sup.) They get alike a denarius who have wrought since the eleventh hour, (for they sought it with their whole soul,) and who have wrought since the first. They, that is, who were called from the beginning of the world have alike received the reward of eternal happiness, with those who come to the Lord in the end of the world.”