Numbers 19:16

19:16 And whoever touches the body of someone killed with a sword in the open fields, ¹  or the body of someone who died of natural causes, ²  or a human bone, or a grave, will be unclean seven days. ³ 

Numbers 19:18

19:18 Then a ceremonially clean person must take hyssop, dip it in the water, and sprinkle it on the tent, on all its furnishings, and on the people who were there, or on the one who touched a bone, or one killed, or one who died, or a grave.

[19:16]  ¹ tn The expression for “in the open field” is literally “upon the face of the field” (עַל־פְּנֵי הַשָּׂדֶה, ’al pÿne hassadeh). This ruling is in contrast now to what was contacted in the tent.

[19:16]  ² tn Heb “a dead body”; but in contrast to the person killed with a sword, this must refer to someone who died of natural causes.

[19:16]  ³ sn See Matt 23:27 and Acts 23:3 for application of this by the time of Jesus.