Numbers 19:16

And, whosoever toucheth on the face of the field, one slain with a sword, or one who hath died, or a human bone or a grave, shall be unclean seven days.

Numbers 31:19

Ye, then, pitch outside the camp, for seven days, - whosoever hath killed a person and whoever hath touched the slain, cleanse yourselves (from sin) on the third day and on the seventh day ye and your captives,.

Matthew 23:27

Alas for you, Scribes and Pharisees, hypocrites; because ye make yourselves like sepulchres whitewashed, which, outside, indeed, appear, beautiful, but, within, are full, of dead men's bones and all uncleanness, -

Numbers 19:11

He that toucheth the dead, even any human person, shall be unclean seven days.

Luke 11:44

Alas for you! because ye are as the secret tombs: even the men that are walking above them, know it not.

Ezekiel 39:11-16

And it shall come to pass in that day. that I will give to Gog a place of memorial for burial in Israel even the valley of them that pass through east of the sea, And it shall be enough to keep back them who would pass through,- and they shall bury there. Gog and all his multitude, and shall call it. Ge-hamon-gog. That is "The valley of the multitude of 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
He that toucheth the dead, even any human person, shall be unclean seven days.
Numbers 31:19
Ye, then, pitch outside the camp, for seven days, - whosoever hath killed a person and whoever hath touched the slain, cleanse yourselves (from sin) on the third day and on the seventh day ye and your captives,.

A bone

Ezekiel 39:11
And it shall come to pass in that day. that I will give to Gog a place of memorial for burial in Israel even the valley of them that pass through east of the sea, And it shall be enough to keep back them who would pass through,- and they shall bury there. Gog and all his multitude, and shall call it. Ge-hamon-gog. That is "The valley of the multitude of Gog."

A grave

Matthew 23:27
Alas for you, Scribes and Pharisees, hypocrites; because ye make yourselves like sepulchres whitewashed, which, outside, indeed, appear, beautiful, but, within, are full, of dead men's bones and all uncleanness, -
Luke 11:44
Alas for you! because ye are as the secret tombs: even the men that are walking above them, know it not.

General references

Leviticus 7:19
And, the flesh that toucheth anything unclean, shall not be eaten, in fire, shall it be consumed, - but, as for the other flesh, any one who is clean, may eat flesh.
Leviticus 11:39
And, when any of the beasts which are yours for food shall die, he that toucheth the carcase of it shall be unclean until the evening.