Numbers 19:16

And anyone touching one who has been put to death with the sword in the open country, or the body of one who has come to his end by a natural death, or a man's bone, or the resting-place of a dead body, will be unclean for seven days.

Numbers 31:19

You yourselves will have to keep outside the tent-circle for seven days, anyone of you who has put any person to death or come near a dead body; and on the third day and on the seventh day make yourselves and your prisoners clean.

Matthew 23:27

A curse is on you, scribes and Pharisees, false ones! for you are like the resting-places of the dead, which are made white, and seem beautiful on the outside, but inside are full of dead men's bones and of all unclean things.

Numbers 19:11

Anyone touching a dead body will be unclean for seven days:

Luke 11:44

A curse is on you! for you are like the resting-places of dead men, which are not seen, and men go walking over them without knowledge of it.

Ezekiel 39:11-16

And it will come about in those days, that I will give to Gog a last resting-place there in Israel, in the valley of Abarim on the east of the sea: and those who go through will be stopped: and there Gog and all his people will be put to rest, and the place will be named, The valley of Hamon-gog.

Treasury of Scripture Knowledge

Summary

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.

A bone

General references

Bible References

Toucheth

Numbers 19:11
Anyone touching a dead body will be unclean for seven days:
Numbers 31:19
You yourselves will have to keep outside the tent-circle for seven days, anyone of you who has put any person to death or come near a dead body; and on the third day and on the seventh day make yourselves and your prisoners clean.

A bone

Ezekiel 39:11
And it will come about in those days, that I will give to Gog a last resting-place there in Israel, in the valley of Abarim on the east of the sea: and those who go through will be stopped: and there Gog and all his people will be put to rest, and the place will be named, The valley of Hamon-gog.

A grave

Matthew 23:27
A curse is on you, scribes and Pharisees, false ones! for you are like the resting-places of the dead, which are made white, and seem beautiful on the outside, but inside are full of dead men's bones and of all unclean things.
Luke 11:44
A curse is on you! for you are like the resting-places of dead men, which are not seen, and men go walking over them without knowledge of it.

General references

Leviticus 7:19
And flesh touched by any unclean thing may not be taken for food: it is to be burned with fire; and as for the flesh of the peace-offerings, everyone who is clean may take it as food:
Leviticus 11:39
And if any beast which may be used for food comes to a natural death, anyone touching its dead body will be unclean till evening.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain