'Stone' in the Bible

Why? Because they were not searching for it by faith, but by works. They came up against the stone which was in the way;

As it is said, See, I am putting in Zion a stone causing a fall, and a rock in the way: but he who has faith in him will not be put to shame.

And David says, Let their table be made a net for taking them, and a stone in their way, and a punishment: