Verses with the word wailing in the New Testament (4 verses):

Matthew 13:42
And shall cast them into a furnace of fire: there shall be wailing and gnashing of teeth.

Matthew 13:50
And shall cast them into the furnace of fire: there shall be wailing and gnashing of teeth.

Revelation 18:15
The merchants of these things, which were made rich by her, shall stand afar off for the fear of her torment, weeping and wailing,

Revelation 18:19
And they cast dust on their heads, and cried, weeping and wailing, saying, Alas, alas that great city, wherein were made rich all that had ships in the sea by reason of her costliness! for in one hour is she made desolate.