Numbers 4:29-33

WEB_Strongs(i)
  29 H1121 "As for the sons H4847 of Merari, H6485 you shall number H4940 them by their families, H1 by their fathers' H1004 houses;
  30 H6485 you shall count H7970 them from thirty H8141 years H1121 old H4605 and upward H2572 even to fifty H8141 years H1121 old, H935 everyone who enters H6635 on the service, H5647 to do H5656 the work H168 of the Tent H4150 of Meeting.
  31 H4931 This is the duty H4853 of their burden, H5656 according to all their service H168 in the Tent H4150 of Meeting: H168 the tabernacle's H7175 boards, H1280 its bars, H5982 its pillars, H134 its sockets,
  32 H5982 and the pillars H2691 of the court H5439 around H134 it, and their sockets, H3489 and their pins, H4340 and their cords, H3627 with all their instruments, H5656 and with all their service: H8034 and by name H6485 you shall appoint H3627 the instruments H4931 of the duty H4853 of their burden.
  33 H5656 This is the service H4940 of the families H1121 of the sons H4847 of Merari, H5656 according to all their service, H168 in the Tent H4150 of Meeting, H3027 under the hand H385 of Ithamar H1121 the son H175 of Aaron H3548 the priest."