<p>19:9 <i>And Jesus said to him: Today salvation has come to this house, as he also is a son of Abraham</i>- See on Acts 16:34. The stress on &quot;house&quot; was presumably to meet the criticism that He had entered the house (:7). But the &quot;house&quot; probably refers to the household. The family would see a huge drop in their wealth- and it was that which converted them to salvation. It was the very inverse of the claims of the prosperity gospel. It is as if Zacchaeus is being set up as the opposite of the rich young man of 18:23. When the synagogue excommunicated a man, he was stated to no longer be a &quot;son of Abraham&quot;. The Lord is demonstrating His authority to utterly override all such statements that excommunication from a religious group means that a person is not in the wider community of God's true people. He sets Himself up as the ultimate deciding authority in a new Israel comprised of serious sinners and secular, non-religious types. Zacchaeus presumably continued in his daily work and therefore remained outside the synagogue system- but a &quot;son of Abraham&quot;.</p><p>The Lord predicates salvation upon being a son of Abraham. But this man was Jewish already; the conclusion is that natural descent would not bring salvation, but rather a faith in Messiah as Abraham had, continuing the family characteristic. Perhaps Zacchaeus is called a son of Abraham in that he too repented of his self-centred materialism, walking away from much wealth to become a nomad.</p>