The interpretation timeline
Luke 19:3 Douay-Rheims

And he sought to see Jesus who he was, and he could not for the crowd, because he was low of stature.

A.D. 378 – 1871 7 witnesses

Patristic

before A.D. 750
378
A.D.
Titus of Bostra Patristic
d. c. A.D. 378
“The seed of salvation had begun to spring up in him, for he desired to see Jesus, having never seen Him. For if he had seen Him, he would long since have given up the Publican’s wicked life. No one that sees Jesus can remain any longer in wickedness. But there were two obstacles to his seeing Him. The multitude not so much of men as of his sins prevented him, for he was little of stature.”
Source
397
A.D.
Ambrose of Milan Patristic
A.D. 339–397
“What means the Evangelist by describing his stature, and that of none other? It is perhaps because he was young in wickedness, or as yet weak in the faith. For he was not yet prostrate in sin who could climb up. He had not yet seen Christ.”

Reformation

c. 1500 – 1650
1637
A.D.
1567–1637
“And he sought to see. He took pains to see Jesus in person as he had heard of His reputation from th* fame of His Digitized by Google ZACCHAEUS desires TO SEE JESUS. 451 virtues and miracles. For we wish to see great men and to know them in person. But Zacchaeus, beside his natural wish, was impelled by one above nature, the inspiration of the Holy Spirit. He desired to see Jesus that he might be absolved of his sins by Him, and be justified and made holy. “He wished,” says S. Chrysostom in his Homily on Zacchaeus, “to know by sight one whom he had known before in imagination, to see the face of Him whom he had seen before in mind, to look upon Him as present whom he had never seen do any works ; that the love of Christ which he had conceived in his heart might be gratified to the full by the sight of his eyes.””
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And he ran before,.... Jesus, and the company that was with him; so very desirous was he of seeing him: and climbed up into a sycamore tree to see him: which sort of trees were very common about Jericho: hence we read of, , "beams of sycamore" in Jericho, which those that were strong took up in their arms, and the owners stood and devoted them to God (g); and among the things which the men of Jericho did, this was one, that they permitted the branches of trees devoted to sacred uses, and of the "charub" tree, and of the "sycamore", to be cut down and used (h). This sort of trees used to grow in plains and valleys, as appears from some passages of Scripture, Kg1 10:27 and from Jewish writings (i); and certain it is, that Jericho was in such a situation. Josephus (k) says, it was seated in a plain; and Strabo says (l), that Jericho is a plain surrounded with mountains; to which agrees the account that (m) Justin gives of it. There is a valley, which is enclosed by mountains on all sides, as with a wall, like a castle; the space of the place is two hundred acres, and it is called Jericho. Hence we read of the plains and valley of Jericho in Scripture, Deu 34:3 so that it is very probable sycamore trees grew there in great plenty; though the place was more famous for palm trees: hence it is called the city of the palm trees, Deu 24:3 which the Targumist, in both places, interprets, the city of Jericho: to which agree the accounts given of it by Pliny (n), Strabo (o), and Justin (p), who all affirm, that it abounded with palm trees; and the latter says also with balsam trees, from the sweet smell of which it might have its name: so the Jews say (q), the ointment of balsam is called the ointment of our land, because it grows in Jericho, and because of the smell of it, it is called Jericho; though some think it has its name from the plain, being in the form of a half moon; the moon, in the Hebrew language, being called (r). This tree seems to have been without the city: and indeed, according to the Jewish canon, it ought to be, which runs thus (s); "they set a tree at a distance from a city, twenty and five cubits, but a "charub tree", and "sycamore", fifty cubits.'' The reason of the greater distance of the latter is, as one of their commentators says (t), because their branches were large; and this is the reason why Zacchaeus went up into one of these trees, because it was large and able to bear him, and tall, from whence he could have a full view of Christ: for he was to pass that way; or rather, "pass by that"; for the word "way" is not in the text; and the sense is, he was to pass by that tree; or "under" it, as the Arabic version renders it. The tree stood by the road side, in which Jesus came, for which reason Zacchaeus made choice of it, as fit for his purpose. (g) T. Bab. Pesachim, fol. 57. 1. & Juchashin, fol. 69. 1. (h) T. Bab. Menachot, fol. 71. 1. & Pesachim, fol. 56. 1. (i) Misn. Sheviith, c. 9. sect. 2. (k) De Bello Jud. l. 4. c. 27. (l) Geograph. l. 16. (m) Hist. l. 36. c. 3. (n) Nat. Hist. l. 5. c. 14. (o) Ut supra. (Geograph. l. 16.) (p) Ib. (q) Gloss. in T. Bab. Beracot, fol. 43. 1. (r) Vid. Masium in Josh. c. 2. p. 37. (s) Misna Bava Bathra, c. 2. sect. 7. (t) Bartenora in ib.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“And he sought to see Jesus who he was - So the mere principle of curiosity in him led to his conversion and salvation, and to that of his whole family, Luk 19:9.”
1863
A.D.
1796–1863
“He sought to see what manner of person Jesus was. This mode ol expression is common to the Hebrew and Greek languages.”
1871
A.D.
1871
“who he was--what sort of person. Curiosity then was his only motive, though his determination not to be baulked was overruled for more than he sought.”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.