Ezekiel 48:14

And they shall not sell any of it, nor trade it, nor cause the first-fruits of the land to pass away. For it is holy to Jehovah.

Leviticus 27:28

However, no devoted thing that a man shall devote to Jehovah of all that he has, either of man or animal, or of the field of his possession, shall be sold or redeemed. Every devoted thing is most holy to Jehovah.

Exodus 22:29

You shall not delay giving the fullness of your crops and juices of your vintage. You shall give the first-born of your sons to Me.

Leviticus 23:20

And the priest shall wave them with the bread of the firstfruits, a wave offering before Jehovah, with the two lambs. They shall be holy to Jehovah for the priest.

Leviticus 25:34

But the field of the open land of their cities may not be sold, for it is theirs forever.

Leviticus 27:9-10

And if it is an animal of which they bring an offering to Jehovah, all that one gives of such to Jehovah shall be holy.

Leviticus 27:32-33

And all the tithe of the herd, or of the flock, all that passes under the rod, a tenth shall be holy to Jehovah

Ezekiel 48:12

And the heave offering shall be theirs, from the heave offering of the land, the holiest of the holy places, by the border of the Levites.

Malachi 3:8-10

Will a man rob God? Yet you have robbed Me. But you say, In what have we robbed You? In the tithe and the offering!

Treasury of Scripture Knowledge

Summary

And they shall not sell of it, neither exchange, nor alienate the firstfruits of the land: for it is holy unto the LORD.

Bible References

They shall

Exodus 22:29
You shall not delay giving the fullness of your crops and juices of your vintage. You shall give the first-born of your sons to Me.
Leviticus 27:10
He shall not alter it nor change it, a good for a bad, or a bad for a good. And if he shall at all change animal for animal, then it and the exchange of it shall be holy.

For

Ezekiel 48:12
And the heave offering shall be theirs, from the heave offering of the land, the holiest of the holy places, by the border of the Levites.
Leviticus 23:20
And the priest shall wave them with the bread of the firstfruits, a wave offering before Jehovah, with the two lambs. They shall be holy to Jehovah for the priest.
Leviticus 27:9
And if it is an animal of which they bring an offering to Jehovah, all that one gives of such to Jehovah shall be holy.
Malachi 3:8
Will a man rob God? Yet you have robbed Me. But you say, In what have we robbed You? In the tithe and the offering!