18 The verse has a temporal clause that actually continues or supplements the temporal clause of the preceding verse. It is made up of the temporal indicator, the infinitive construct with the preposition, and the suffixed subjective genitive: “and it shall be when you eat.” Here it is translated simply “and eat” since the temporal element was introduced in the last verse.
19 This is the תְּרוּמָה (térumah), the “raised offering” or “heave offering” (cf. , ). It may simply be called a “contribution” (so ). The verb of the sentence is from the same root: “you shall lift up/raise up.” It was to be an offering separated from the rest and raised up to the Lord in the sight of all. It was designed to remind the Israelites that the produce and the land belonged to God.

In other versions

and when you eat of the bread of the land, you shall present a contribution to the Lord.

and you eat the food of the land, present a portion as an offering to the Lord.

you are to offer a contribution to the Lord when you eat from the food of the land.

and you eat the crops that grow there, you must set some aside as a sacred offering to the Lord.

whenever you eat from the food of the land, you will lift up a contribution to Yahweh.

Then it shall be, that, when ye eat of the bread of the land, ye shall offer up an heave offering unto the Lord.

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