Numbers 18:21-28

CKJV_Strongs(i)
  21 H5414 And, behold, I have given H1121 the sons H3878 of Levi H4643 all the tenth H3478 in Israel H5159 for an inheritance, H2500 for H5656 their service H5647 which they serve, H5656 even the service H168 of the tabernacle H4150 of the congregation.
  22 H1121 Neither must the sons H3478 of Israel H5750 henceforth H7126 come near H168 the tabernacle H4150 of the congregation, H5375 lest they carry H2399 sin, H4191 and die.
  23 H3881 But the Levites H5647 shall do H5656 the service H168 of the tabernacle H4150 of the congregation, H5375 and they shall carry H5771 their iniquity: H2708 it shall be a statute H5769 for ever H1755 throughout your generations, H8432 that among H1121 the sons H3478 of Israel H5157 they have H5159 no inheritance.
  24 H4643 But the tithes H1121 of the sons H3478 of Israel, H7311 which they offer H8641 as an heave offering H3068 unto the Lord, H5414 I have given H3881 to the Levites H5159 to inherit: H559 therefore I have said H8432 unto them, Among H1121 the sons H3478 of Israel H5157 they shall have H5159 no inheritance.
  25 H3068 And the Lord H1696 spoke H4872 unto Moses, H559 saying,
  26 H1696 Thus speak H3881 unto the Levites, H559 and say H3947 unto them, When you take H1121 of the sons H3478 of Israel H4643 the tithes H5414 which I have given H5159 you from them for your inheritance, H7311 then you shall offer H8641 up an heave offering H3068 of it for the Lord, H4643 even a tenth H4643 part of the tithe.
  27 H8641 And this your heave offering H2803 shall be reckoned H1715 unto you, as though it were the corn H1637 of the threshingfloor, H4395 and as the fullness H3342 of the winepress.
  28 H7311 Thus you also shall offer H8641 an heave offering H3068 unto the Lord H4643 of all your tithes, H3947 which you receive H1121 of the sons H3478 of Israel; H5414 and you shall give H3068 there the Lord's H8641 heave offering H175 to Aaron H3548 the priest.