Numbers 19:16
And whosoever toucheth one that is slain with a sword in the open fields, or a dead body, or a bone of a man, or a grave, shall be unclean seven days.
Cross-reference
Numbers 19:11 states touching a dead body brings seven days uncleanness; Numbers 19:16 expands to field, sword, bone, grave. Very close parallel.
In Numbers 31:19, the same purification procedure applies to warriors who touched slain enemies — a direct parallel to the corpse impurity law.
Numbers 9:6 records men defiled by a dead body, exactly as Numbers 19:16 prescribes, preventing them from keeping Passover.
In Matthew 23:27, Jesus calls Pharisees 'whitewashed tombs'—alluding to the defilement from dead bones and graves to expose hypocrisy.
In Luke 11:44, Jesus compares hypocrites to unmarked graves that defile by contact—echoing the hidden corpse impurity from Numbers 19:16.
Leviticus 21:1 restricts priests from making themselves unclean for the dead—a specific application of the corpse impurity law.
In 2 Kings 23:14, Josiah fills pagan sites with human bones to permanently defile them—deliberately using the law of corpse impurity.
Isaiah 65:4 condemns those who sit in tombs—an act that would cause corpse defilement under Numbers 19:16, showing idolaters' contempt for purity.
In Lamentations 4:14, people are so defiled from blood contact that others avoid touching them — a direct illustration of the uncleanness law in Numbers 19:16.
In Ezekiel 39:12, Israel buries bodies for seven months to cleanse the land — directly applying the principle of defilement from corpses in Numbers 19:16.
In Luke 8:27, the demoniac lives among tombs, making him ceremonially unclean per Numbers 19:16 — a concrete NT example of the law's effect.
Ezekiel 39:11-16 describes burying Gog's army to cleanse the land, applying the same principle of defilement from human bones and graves.
Leviticus 11:39 deals with uncleanness from dead clean animals—a parallel impurity law but shorter duration (evening vs seven days).