They shall come at no dead person to defile themselves
Whosoever touched a dead body became legally unclean, (Numbers 19:11,) and thereby was disqualified for attending upon God's worship in the temple, Leviticus 22:3. Upon which account the priests were forbidden to contract such defilement, unless for their nearest relations, which prohibition is here renewed: see the margin. After he is cleansed they shall reckon unto him seven days His uncleanness continued seven days, according to the forecited law, Numbers 19:11; and the priests were to reckon to him seven days more, before he could be admitted into the sanctuary.