Numbers 9:2-7

AKJV_Strongs(i)
  2 H1121 Let the children H3478 of Israel H6213 also keep H6453 the passover H4150 at his appointed H4150 season.
  3 H702 In the fourteenth H6240 H3117 day H2088 of this H2320 month, H996 at H6153 even, H6213 you shall keep H4150 it in his appointed H4150 season: H3605 according to all H2708 the rites H3605 of it, and according to all H4941 the ceremonies H6213 thereof, shall you keep it.
  4 H4872 And Moses H1696 spoke H1121 to the children H3478 of Israel, H6213 that they should keep H6453 the passover.
  5 H6213 And they kept H6453 the passover H702 on the fourteenth H6240 H3117 day H7223 of the first H2320 month H996 at H6153 even H4057 in the wilderness H5514 of Sinai: H3605 according to all H3068 that the LORD H6680 commanded H4872 Moses, H3651 so H6213 did H1121 the children H3478 of Israel.
  6 H582 And there were certain men, H834 who H2931 were defiled H5315 by the dead H5315 body H120 of a man, H3201 that they could H6213 not keep H6453 the passover H3117 on that day: H7126 and they came H6440 before H4872 Moses H6440 and before H175 Aaron H3117 on that day:
  7 H1992 And those H582 men H559 said H2931 to him, We are defiled H5315 by the dead H5315 body H120 of a man: H4100 why H1639 are we kept H1639 back, H7126 that we may not offer H7133 an offering H3068 of the LORD H4150 in his appointed H4150 season H8432 among H1121 the children H3478 of Israel?