Exodus 22:29

29“You shall not delay to offer from the fullness of your harvest and from the outflow of your presses. aThe firstborn of your sons you shall give to me.

Exodus 34:26

26 bThe best of the firstfruits of your ground you shall bring to the house of the Lord your God. cYou shall not boil a young goat in its mother’s milk.”

Leviticus 23:10-17

10Speak to the people of Israel and say to them, dWhen you come into the land that I give you and reap its harvest, you shall bring the sheaf of ethe firstfruits of your harvest to the priest, 11and he shall fwave the sheaf before the Lord, so that you may be accepted. On the day after the Sabbath the priest shall wave it. 12And on the day when you gwave the sheaf, you shall offer a hmale lamb a year old without blemish as a burnt offering to the Lord. 13 iAnd the grain offering with it shall be two tenths of an ephah
An  ephah was about 3/5 bushel or 22 liters
of fine flour mixed with oil, a food offering to the Lord with a pleasing aroma, kand the drink offering with it shall be of wine, a fourth of a hin.
A  hin was about 4 quarts or 3.5 liters
14And you shall eat neither bread nor grain mparched or nfresh until this same day, until you have brought the offering of your God: it is a statute forever throughout your generations in all your dwellings.

The Feast of Weeks

15 o“You shall count seven full weeks from the day after the Sabbath, from the day that you brought the sheaf of the pwave offering. 16You shall count qfifty days to the day after the seventh Sabbath. Then you shall present a grain offering of rnew grain to the Lord. 17You shall bring from your dwelling places two loaves of bread to be waved, made of two tenths of an ephah. They shall be of fine flour, and they shall be baked with leaven, as sfirstfruits to the Lord.

Numbers 18:12-13

12 tAll the best of the oil and all the best of the wine and of the grain, uthe firstfruits of what they give to the Lord, I give to you. 13The first ripe fruits of all that is in their land, vwhich they bring to the Lord, shall be yours. wEveryone who is clean in your house may eat it.

Deuteronomy 12:5-7

5But you shall seek xthe place that the Lord your God will choose out of all your tribes to put his name and make his habitation
Or  name as its habitation
there. There you shall go,
6and there you shall bring your burnt offerings and your sacrifices, zyour tithes and the contribution that you present, your vow offerings, your freewill offerings, and the aafirstborn of your herd and of your flock. 7And abthere you shall eat before the Lord your God, and acyou shall rejoice, you and your households, in all that you undertake, in which the Lord your God has blessed you.

Deuteronomy 26:10

10And behold, now I bring the first of the fruit of the ground, which you, O Lord, have given me.’ And you shall set it down before the Lord your God and worship before the Lord your God.

Nehemiah 10:35

35We obligate ourselves adto bring the firstfruits of our ground and the firstfruits of all fruit of every tree, year by year, to the house of the Lord;
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