Numbers 10:8

10:8 The sons of Aaron, the priests, must blow the trumpets; and they will be to you for an eternal ordinance throughout your generations.

Numbers 15:21

15:21 You must give to the Lord some of the first of your finely ground flour as a raised offering in your future generations.

Numbers 15:23

15:23 all that the Lord has commanded you by the authority of Moses, from the day that the Lord commanded Moses and continuing through your future generations –