Numbers 35:33

WEB_Strongs(i)
  33 H2610 "‘So you shall not pollute H776 the land H1818 in which you are: for blood, H2610 it pollutes H776 the land; H3722 and no expiation H776 can be made for the land H1818 for the blood H8210 that is shed H1818 therein, but by the blood H8210 of him who shed it.