Luke 11:44

Woe to you! For you are like graves which are unmarked, and people walk over them without being aware of it [and are ceremonially unclean].”

Numbers 19:16

Also, anyone in the open field who touches one who has been killed with a sword or who has died [of natural causes], or a human bone or a grave, shall be unclean for seven days.

Psalm 5:9


For there is nothing trustworthy or reliable or truthful in what they say;
Their heart is destruction [just a treacherous chasm, a yawning gulf of lies].
Their throat is an open grave;
They [glibly] flatter with their [silken] tongue.

Hosea 9:8


Ephraim was a watchman with my God, a [true] prophet [to warn the nation];
But the snare of a bird catcher was laid in all his paths.
And there is only deep hostility in the house of his God (the land of Israel).

Matthew 23:27-28

“Woe to you, [self-righteous] scribes and Pharisees, hypocrites! For you are like whitewashed tombs which look beautiful on the outside, but inside are full of dead men’s bones and everything unclean.

Acts 23:3

Then Paul said to him, “God is going to strike you, you whitewashed wall! Do you actually sit to judge me according to the Law, and yet in violation of the Law order me to be struck?”

Treasury of Scripture Knowledge

Summary

Woe unto 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.

Bible References

For

Numbers 19:16
Also, anyone in the open field who touches one who has been killed with a sword or who has died [of natural causes], or a human bone or a grave, shall be unclean for seven days.
Psalm 5:9

For there is nothing trustworthy or reliable or truthful in what they say;
Their heart is destruction [just a treacherous chasm, a yawning gulf of lies].
Their throat is an open grave;
They [glibly] flatter with their [silken] tongue.
Hosea 9:8

Ephraim was a watchman with my God, a [true] prophet [to warn the nation];
But the snare of a bird catcher was laid in all his paths.
And there is only deep hostility in the house of his God (the land of Israel).
Matthew 23:27
“Woe to you, [self-righteous] scribes and Pharisees, hypocrites! For you are like whitewashed tombs which look beautiful on the outside, but inside are full of dead men’s bones and everything unclean.
Acts 23:3
Then Paul said to him, “God is going to strike you, you whitewashed wall! Do you actually sit to judge me according to the Law, and yet in violation of the Law order me to be struck?”