Gregory the Great — as excerpted in the Catena Aurea on John 20:10-18

“(Hom. xxv.) She sought the body, and found it not; she persevered in seeking; and so it came to pass that she found. Her longings, growing the stronger, the more they were disappointed, at last found and laid hold on their object. For holy longings ever gain strength by delay; did they not, they would not be longings. Mary so loved, that not content with seeing the sepulchre, she stooped down and looked in: let us see the fruit which came of this persevering love: And seeth two Angels in white sitting, the one at the head, and the other at the feet, where the body of Jesus had lain.”