Albert Barnes Commentary Luke 19:9

"And Jesus said unto him, To-day is salvation come to this house, forasmuch as he also is a son of Abraham." — Luke 19:9 (ASV)

Salvation is come to this house. This family. They have this day received the blessings of the gospel and become interested in the Messiah's kingdom. Salvation begins when people truly receive Christ and their sins are pardoned; it is completed when the soul is sanctified and received into heaven.

Forasmuch. Because. For he has given evidence that he is a new man, and is disposed to forsake his sins and receive the gospel.

The son of Abraham. Until now, although a Jew, he has been a sinner, and a great sinner. He was not worthy to be called a son of Abraham. Now, by repentance, and by receiving the Christ whose day Abraham saw and was glad (John 8:56), he has shown himself to be worthy to be called his son.

Abraham was an example of distinguished piety; the father of the faithful (Romans 4:11), as well as the ancestor of the Jews. Those who were descended from him were called his sons, and particularly those who resembled him. In this place, the phrase is used in both senses.