'Gnashing' in the Bible

but the sons of the kingdom shall be cast out into the outer darkness: there shall be the weeping and the gnashing of teeth.

and they shall cast them into the furnace of fire; there shall be the weeping and the gnashing of teeth.

and shall cast them into the furnace of fire; there shall be the weeping and the gnashing of teeth.

Then said the king to the servants, Bind him feet and hands, and take him away, and cast him out into the outer darkness: there shall be the weeping and the gnashing of teeth.

and shall cut him in two and appoint his portion with the hypocrites: there shall be the weeping and the gnashing of teeth.

And cast out the useless bondman into the outer darkness; there shall be the weeping and the gnashing of teeth.

There shall be the weeping and the gnashing of teeth, when ye shall see Abraham and Isaac and Jacob and all the prophets in the kingdom of God, but yourselves cast out.