Bamidbar 18:29

29 Out of all your mattenot ye shall offer every terumat Hashem, of all the best thereof, even the set apart as kodesh part thereof out of it.

Bamidbar 18:29 Meaning and Commentary

Numbers 18:29

Out of all your gifts ye shall offer every heave offering of
the Lord
Not only out of their tithes, but out of whatsoever gifts were given by the Israelites to them, and out of the produce of the fields which belonged to their cities, ( Numbers 35:4 ) ; the Levites were to take a tenth, and bring it to the Lord as an heave offering; that is, they were to give it to the priests, to testify their gratitude for everything they had, and to sanctify the rest unto them, and confirm their right and title to it, and give them the free use of it:

of all the best thereof, [even] the hallowed part thereof, out of it;
which was the tenth part, for that Was holy, as Aben Ezra says, and that was to be the best of it, which was always to be given to the Lord.

Bamidbar 18:29 In-Context

27 And this your terumah shall be reckoned unto you, as though it were the grain of the threshing floor, and as the fulness of the winepress.

28 Thus ye also shall offer a terumat Hashem of all your ma’aserot, which ye receive of the Bnei Yisroel; and ye shall give thereof terumat Hashem to Aharon HaKohen.

29 Out of all your mattenot ye shall offer every terumat Hashem, of all the best thereof, even the set apart as kodesh part thereof out of it.

30 Therefore, thou shalt say unto them, When ye have raised up the best thereof from it, then it shall be counted unto the Levi’im as the increase of the threshing floor, and as the increase of the winepress.

31 And ye shall eat it in every place, ye and your Bais: for it is your sachar for your Avodah in the Ohel Mo’ed.