1 Chronicles 23:24-27

Webster_Strongs(i)
  24 H1121 These were the sons H3878 of Levi H1004 after the house H1 of their fathers H7218 ; even the heads H1 of the father's H6485 [H8803] houses, as they were counted H4557 by number H8034 of names H1538 by their polls H6213 [H8802] , that did H4399 the work H5656 for the service H1004 of the house H3068 of the LORD H1121 , from the age H6242 of twenty H8141 years H4605 and upward.
  25 H1732 For David H559 [H8804] said H3068 , The LORD H430 God H3478 of Israel H5117 [H8689] hath given rest H5971 to his people H7931 [H8799] , that they may dwell H3389 in Jerusalem H5769 for ever:
  26 H3881 And also to the Levites H5375 [H8800] ; they shall no more carry H4908 the tabernacle H3627 , nor any vessels H5656 of it for its service.
  27 H314 For by the last H1697 words H1732 of David H3881 the Levites H4557 were numbered H6242 from twenty H8141 years H1121 old H4605 and above: