Ezekiel 48:14

And they do not sell of it, nor exchange, nor cause to pass away the first-fruit of the land: for it is holy to Jehovah.

Leviticus 27:28

'Only, no devoted thing which a man devoteth to Jehovah, of all that he hath, of man, and beast, and of the field of his possession, is sold or redeemed; every devoted thing is most holy to Jehovah.

Exodus 22:29

'Thy fulness and thy liquids thou dost not delay; the first-born of thy sons thou dost give to Me;

Leviticus 23:20

and the priest hath waved them, besides the bread of the first -fruits -- a wave-offering before Jehovah, besides the two lambs; they are holy to Jehovah for the priest;

Leviticus 25:34

And a field, a suburb of their cities, is not sold; for a possession age-during it is to them.

Leviticus 27:9-10

And if it is a beast of which they bring near an offering to Jehovah, all that one giveth of it to Jehovah is holy;

Leviticus 27:32-33

And all the tithe of the herd and of the flock -- all that passeth by under the rod -- the tenth is holy to Jehovah;

Ezekiel 48:12

even the heave-offering hath been to them, out of the heave-offering of the land, most holy, by the border of the Levites.

Malachi 3:8-10

Doth man deceive God? but ye are deceiving Me, And ye have said: 'In what have we deceived Thee?' The tithe and the heave-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
'Thy fulness and thy liquids thou dost not delay; the first-born of thy sons thou dost give to Me;
Leviticus 27:10
he doth not change it nor exchange it, a good for a bad, or a bad for a good; and if he really change beast for beast, -- then it hath been -- it and its exchange is holy.

For

Ezekiel 48:12
even the heave-offering hath been to them, out of the heave-offering of the land, most holy, by the border of the Levites.
Leviticus 23:20
and the priest hath waved them, besides the bread of the first -fruits -- a wave-offering before Jehovah, besides the two lambs; they are holy to Jehovah for the priest;
Leviticus 27:9
And if it is a beast of which they bring near an offering to Jehovah, all that one giveth of it to Jehovah is holy;
Malachi 3:8
Doth man deceive God? but ye are deceiving Me, And ye have said: 'In what have we deceived Thee?' The tithe and the heave-offering!