Luke 19:5

Now Zacchæus desired no more than to see, but He who is able to do more than we ask for, granted to Him far above what he expected; as it follows, And when Jesus came to the place, he looked up, and saw him. He saw the soul of the man striving earnestly to live a holy life, and converts him to godliness.

Uninvited he invites Himself to his house; as it follows, Zacchæus, make haste, and come down, & c. for He knew how richly He would reward his hospitality. And though He had not yet heard the word of invitation, He had already seen the will.

The Lord as He journeyed came to the place where Zacchæus had climbed the sycamore, for having sent His preachers throughout the world in whom He Himself spoke and went, He comes to the Gentile people, who were already raised up on high through faith in His Passion, and whom when He looked up He saw, for He chose them through grace. Now our Lord once abode in the house of the chief of the Pharisees, but when He did works such as none but God could do, they railed at Him. Wherefore hating their deeds He departed, saying, Your house shall be left unto you desolate; (Matt. 23:38.) but now He must needs stay at the house of the weak Zacchæus, that is, by the grace of the new law brightly shining, He must take rest in the hearts of the lowly nations. But that Zacchæus is bid to come down from the sycamore tree, and prepare an abode for Christ, this is what the Apostle says, Yea, though we have known Christ after the flesh, yet now henceforth know we Him no more. (2 Cor. 5:16.) And again elsewhere, For though he was crucified through weakness, yet he liveth by the power of God. (2 Cor. 13:4.) It is plain that the Jews always hated the salvation of the Gentiles; but salvation, which formerly filled the houses of the Jews, has this day shone upon the Gentiles, forasmuch as this people also by believing on God is a son of Abraham.

The Lord said to him, Make haste and come down, that is, "Thou hast ascended by penitence to a place too high for thee, come down by humility, lest thy exaltation cause thee to slip. I must abide in the house of a humble man."