Ye shall offer up a cake of the first of your dough for an heave offering: as ye do the heave offering of the threshingfloor, so shall ye heave it.

Of the first of your dough ye shall offer up a cake for a heave-offering: as the heave-offering of the threshing-floor, so shall ye heave it.

Of the things you eat. As you separate firstfruits of your barnfloors:

the first of your dough shall ye offer, a cake, for a heave-offering; as the heave-offering of the threshing-floor, so shall ye offer this.

the beginning of your dough a cake ye heave up, a heave-offering; as the heave-offering of a threshing-floor, so ye do heave it.

Of the first of your rough meal you are to give a cake for a lifted offering, lifting it up before the Lord as the offering of the grain-floor is lifted up.

Of the first of your dough ye shall set apart a cake for a gift; as that which is set apart of the threshing-floor, so shall ye set it apart.

from the foods that you eat. Just as you separate the first-fruits of your threshing floors,

De primitiis conspersionum vestrarum: placentam offeretis in oblationem: stout oblationem areae, sic offeretis illam.

Ye shall offer up a cake. Here another kind of first-fruits is required, to offer up sacred cakes of the first of their dough. First-fruits were offered of their fruits and ears of corn; but the representation was more lively in the bread itself; and, consequently, God would have them present tokens of their gratitude, not only from the barn, but from the mill, and the oven, so that whilst they eat their bread also, they might have Him before their eyes.

Dough - "Coarse meal" Nehemiah 10:37; Ezekiel 44:30.

Ye shall offer - the first of your dough - Concerning the offerings of first-fruits, see the notes on Exodus 22:29.

Ye shall offer up a cake of the first of your (e) dough [for] an heave offering: as [ye do] the heave offering of the threshingfloor, so shall ye heave it.
(e) Which is made from the first corn you harvest.

Ye shall offer up a cake of the first of your dough for an heave offering,.... Of the first dough made of the first corn that was threshed, winnowed and ground, they were to make a cake, and offer it an heave offering unto the Lord; the quantity of it is not expressed, but was left to the people's generosity; no stinted measure was fixed by the law; but according to the Scribes, or the traditions of the elders, the quantity of the cake was the twenty fourth part of the first dough that was kneaded; not the forty fourth, as Buxtorf (p) through mistake says; so the Targum of Jonathan,"of the first of your dough, one out of twenty four (i.e. the twenty fourth part of it), ye shall separate a separation for the priests,''with which agrees the Misnah (q), though according to that, if made to sell publicly it was the forty eighth part of it. Some, because Numbers 15:21 begins and ends with "mem", which numerically signifies "forty", think this is an instruction to a bountiful person to give the fortieth part (r):
as ye do the heave offering of the threshing floor, so shall ye heave it; as the two wave loaves and firstfruits of their harvest, Leviticus 23:16.
(p) Synagog. Jude. c. 34. p. 602. (q) Challah, c. 2. sect. 7. so Schulchan Aruch, par. 2. c. 322. so Jarchi & Ben Gersom in loc. (r) Baal Hatturim in loc.

heave offering of the threshing-floor--meaning the corn on the threshing-floor; that is, after harvest.
so shall ye heave it--to the priests accompanying the ceremony with the same rites.

The threshing floor - That is, of the corn in the threshing floor, when you have gathered in your corn.