2 Samuel 12:4

A traveller, … wayfaring man,… man that was come to him. Nathan probably used these three terms chiefly to diversify his language, but it has served as a handle for much allegorizing. Thus Rashi explains it of covetousness, which comes at first as a mere "passer by," the literal meaning of the word rendered "traveller." But, if admitted, it grows into "a wayfaring man," who comes and goes on business, and stays a longer time. Finally it changes into "one who has come to him," and remains permanently. Such allegorical interpretations are common in the Fathers, and thus Augustine compares the three stages of sin to our Lord's three miracles of raising the dead. The sinner is at first like Jairus's daughter, just dead, and repentance can restore him immediately to life; but, if sin be persisted in, he becomes like the son of the widow of Nain, carried away to burial; and finally like Lazarus, given over to corruption.