The interpretation timeline
Leviticus 23:17 Douay-Rheims

Out of all your dwellings, two leaves of the firstfruits, of two tenths of flour leavened, which you shall bake for the firstfruits of the Lord.

1105 – 1871 5 witnesses

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
מושבתיכם [YE SHALL BRING] OUT OF YOUR HABITATIONS [TWO WAVE LOAVES] — but not from outside the Land of Canaan (Sifra, Emor, Chapter 13 1; Menachot 83b). לחם תנופה WAVE LOAVES — i. e. heave loaves that have been heaved in honour of the Lord. It is these which constitute the “new meal-offering” mentioned above (v. 16). בכורים [THEY ARE] THE FIRSTLINGS — the first of all meal-offerings offered, the first even in relation to the “meal-offering of jealousy” (cf. Numbers 5:15) which was brought of barley; even that must not be offered of the new crop previous to the two loaves, although a barley offering had already been brought, viz., the Omer which was offered on Passover (Menachot 84b).”
Source
1270
A.D.
Ramban Jewish
1194–1270
“THEY SHALL BE BAKED WITH LEAVEN. Scripture commanded that these two loaves be leavened, because they are a thanks-offering to G-d for having kept for us the appointed time of the harvest, and a thanks-offering comes with cakes of leavened bread. Perhaps the [usual] prohibition of bringing leavened things as an offering, 2:11. is because leaven alludes to the attribute of justice, for it is called chametz (leaven), just as wine which sours is called ‘chometz yayin v’chometz sheichar’ (vinegar of wine or vinegar of strong drink), the word [chametz] being derived from the expression: the unrighteous ‘v’chomeitz’ (and ruthless man), for [vinegar of wine and vinegar of strong drink] are drinks whose original taste has been “robbed” from them, and they are therefore not suitable for [normal] drinking. Similarly, for my heart yithchameitz’, 73:21. means that it was “in a ferment, and it lost its composure.” Now since the offerings are brought to be acceptable before the Glorious Name, they are therefore not to be brought from objects which possess a strong power to change natural properties of other things [such as leaven], and similarly they are not to be brought from things which are completely sweet). such as honey. [Instead, they are to come] only from things which are blended of different qualities, just as the Rabbis have said with reference to the creation of the world “He combined the attribute of mercy with the attribute of justice, and created the world.” Now on the Festival of Weeks which is the day of the Giving of the Torah [on Mount Sinai], the offering [i.e., the two leavened loaves and the various burnt-offerings, together with their meal-offering which is of unleavened bread, as stated in Verse 18] comes in accordance with the law of the thanks-offering [which was brought with ten leavened cakes and thirty unleavened cakes], for it is the day of the solemn assembly. The student learned in the mysteries of the Cabala will understand. And this is the secret of which our Rabbis have said: “All offerings are destined to cease [in the World to Come], but the thanks-offering will never cease etc.,” for in it are both unleavened and leavened [cakes], comparable to the World to Come [in which the Divine attributes of justice and mercy will forever be in perfect harmony].”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And ye shall bring out of your habitations two wave loaves of two tenth deals,.... Out of their habitations in the land of Canaan; and not out of those without the land, as Jarchi observes; and not out of all of them, as Ben Gersom remarks; though the Vulgate Latin version has it, out of "all" of our habitations, but wrongly; and indeed out of no one particular habitation, because it was at the public expense; but they were brought from some part of the country or another, even the quantity of two tenth parts of an ephah, or two omers of wheat flour made into two loaves, which were to be, and were waved before the Lord, and hence so called; and are the same with the new meat offering, or rather bread offering, made of the new corn, in the preceding verse, so Jarchi: they shall be of fine flour; of wheat flour, the finest of it, of which all meat or bread offerings were made; and this was particularly on account of the wheat harvest, and therefore it was proper that the finest of the wheat should be used on this occasion; See Gill on Lev 2:1; each loaf or cake, according to Maimonides (w), was seven hands' breadths long, four hands' breadths broad, and four fingers high: they shall be baked with leaven; the common meat offering was unleavened, part of which was burnt on the altar, where no leaven might be burnt, Lev 2:4; and from hence it may be concluded that no part of these loaves was to be burnt, but the whole of them fell to the share of the priests: they are the firstfruits unto the Lord; which he claimed as his, and gave unto his priests; and it was but right and just he should have them, as an acknowledgment of all coming from his hands, and as expressive of gratitude for them, and for the sanctification of the rest; hence this is called the feast of the firstfruits of wheat harvest, Exo 34:22. (w) Hilchot Tamidin, &c. c. 8. sect. 10.”
Source
1849
A.D.
1774–1849
“Loaves. The Protestants supply wave loaves, (Haydock) though their Hebrew text has nothing. The Samaritan is more correct. (Houbigant)”
1871
A.D.
1871
“Ye shall bring out of your habitations two wave loaves of two tenth deals, &c.--These loaves were made of "fine" or wheaten flour, the quantity contained in them being somewhat more than ten pounds in weight. As the wave-sheaf gave the signal for the commencement, the two loaves solemnized the termination of the harvest season. They were the first-fruits of that season, being offered unto the Lord by the priest in name of the whole nation. (See Exo 34:22). The loaves used at the Passover were unleavened; those presented at Pentecost were leavened--a difference which is thus accounted for, that the one was a memorial of the bread hastily prepared at their departure, while the other was a tribute of gratitude to God for their daily food, which was leavened.”
Source
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.