Leviticus 27:32-33

32And every tithe of herds and flocks, every tenth animal of all that apass under the herdsman’s staff, shall be holy to the Lord. 33One shall not differentiate between good or bad, bneither shall he make a substitute for it; and if he does substitute for it, then both it and the substitute shall be holy; it shall not be redeemed.”

Numbers 18:15-17

15 cEverything that opens the womb of all flesh, whether man or beast, which they offer to the Lord, shall be yours. Nevertheless, dthe firstborn of man you shall redeem, and the firstborn of unclean animals you shall redeem. 16And their redemption price e(at a month old you shall redeem them) you shall fix at five shekels
A  shekel was about 2/5 ounce or 11 grams
in silver, according to the shekel of the sanctuary, gwhich is twenty gerahs.
17 hBut the firstborn of a cow, or the firstborn of a sheep, or the firstborn of a goat, you shall not redeem; they are holy. You shall sprinkle their blood on the altar and shall burn their fat as a food offering, with a pleasing aroma to the Lord.

Deuteronomy 12:17

17You may not eat within your towns ithe tithe of your grain or of your wine or of your oil, or the firstborn of your herd or of your flock, or any of your vow offerings that you vow, or your freewill offerings or the contribution that you present,

Deuteronomy 14:22-26

Tithes

22 jYou shall tithe all the yield of your seed that comes from the field year by year. 23And before the Lord your God, in the place that he will choose, to make his name dwell there, kyou shall eat the tithe of your grain, of your wine, and of your oil, land the firstborn of your herd and flock, mthat you may learn to fear the Lord your God always. 24And if the way is too long for you, so that you are not able to carry the tithe, when the Lord your God blesses you, because nthe place is too far from you, which the Lord your God chooses, to set his name there, 25then you shall turn it into money and bind up the money in your hand and go to the place that the Lord your God chooses 26and spend the money for whatever you desireoxen or sheep or wine or strong drink, whatever your appetite craves. And oyou shall eat there before the Lord your God and rejoice, you and your household.

Deuteronomy 15:19-20

19 pAll the firstborn males that are born of your herd and flock you shall dedicate to the Lord your God. You shall do no work with the firstborn of your herd, nor shear the firstborn of your flock. 20 qYou shall eat it, you and your household, before the Lord your God year by year at the place that the Lord will choose.

Deuteronomy 26:2

2 ryou shall take some of the first of all the fruit of the ground, which you harvest from your land that the Lord your God is giving you, and you shall put it in a basket, and you shall sgo to the place that the Lord your God will choose, to make his name to dwell there.

Malachi 3:8

8Will man rob God? Yet you are robbing me. tBut you say, ‘How have we robbed you?’ uIn your tithes and contributions.

Malachi 3:10

10 vBring the full tithe into the storehouse, that there may be food in my house. And thereby wput me to the test, says the Lord of hosts, if I will not open xthe windows of heaven for you and pour down for you a blessing until there is no more need.
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