Numbers 19:16

And whoever 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.

Numbers 31:19

And do ye abide without the camp seven days: whoever hath killed any person, and whoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.

Matthew 23:27

Woe to you, scribes and Pharisees, hypocrites! for ye are like whitened sepulchers, which indeed appear beautiful outward, but are within full of dead men's bones, and of all uncleanness.

Numbers 19:11

He that toucheth the dead body of any man shall be unclean seven days.

Luke 11:44

Woe to you, scribes and Pharisees, hypocrites! for ye are as graves which appear not, and the men that walk over them are not aware of them.

Ezekiel 39:11-16

And it shall come to pass in that day, that I will give to Gog a place there of graves in Israel, the valley of the passengers on the east of the sea: and it shall stop the noses of the passengers: and there shall they bury Gog and all his multitude: and they shall call it 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
He that toucheth the dead body of any man shall be unclean seven days.
Numbers 31:19
And do ye abide without the camp seven days: whoever hath killed any person, and whoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.

A bone

Ezekiel 39:11
And it shall come to pass in that day, that I will give to Gog a place there of graves in Israel, the valley of the passengers on the east of the sea: and it shall stop the noses of the passengers: and there shall they bury Gog and all his multitude: and they shall call it The valley of Hamon-gog.

A grave

Matthew 23:27
Woe to you, scribes and Pharisees, hypocrites! for ye are like whitened sepulchers, which indeed appear beautiful outward, but are within full of dead men's bones, and of all uncleanness.
Luke 11:44
Woe to you, scribes and Pharisees, hypocrites! for ye are as graves which appear not, and the men that walk over them are not aware of them.

General references

Leviticus 7:19
And the flesh that toucheth any unclean thing shall not be eaten; it shall be burnt with fire: and as for the flesh, all that shall be clean shall eat of it.
Leviticus 11:39
And if any beast, of which ye may eat, shall die; he that toucheth its carcass shall be unclean until the evening.