Luke 19:9

Zacchæus is called the son of Abraham, not because he was born of Abraham's seed, but because he imitates his faith, that as Abraham left his country and his father's house, so he abandoned all his goods in giving them to the poor. And He well says, "He also," to declare that not only those who had lived justly, but those who are raised up from a life of injustice, belong to the sons of promise.

To such Christ announces salvation; Jesus saith unto him, This day is salvation come to this house, signifying that Zacchaeus had attained to salvation, meaning by the house the inhabitant thereof. And it follows, forasmuch as he also is a son of Abraham. For He would not have given the name of a son of Abraham to a lifeless building. He said not that he "was" a son of Abraham, but that he now is. For before when he was the chief among the publicans, and bore no likeness to the righteous Abraham, he was not his son.

We have two kinds of goods in us, bodily, and spiritual; the just man gives up all his bodily goods to the poor, but he forsakes not his spiritual goods, but if he has extorted any thing from any one, he restores to him fourfold; signifying thereby that if a man by repentance walks in the opposite path to his former perverseness, he by the manifold practice of virtue heals all his old offences, and so merits salvation, and is called the son of Abraham, because he went out from his own kindred, that is, from his ancient wickedness.