Matthew 8:12

8:12 but the sons of the kingdom will be thrown out into the outer darkness, where there will be weeping and gnashing of teeth.” ¹ 

Matthew 24:51

24:51 and will cut him in two, ²  and assign him a place with the hypocrites, where there will be weeping and gnashing of teeth.

Matthew 25:30

25:30 And throw that worthless slave into the outer darkness, where there will be weeping and gnashing of teeth.’

Matthew 22:13

22:13 Then the king said to his attendants, ‘Tie him up hand and foot and throw him into the outer darkness, where there will be weeping and gnashing of teeth!’

[8:12]  ¹ sn Weeping and gnashing of teeth is a figure for remorse and trauma, which occurs here because of exclusion from God’s promise.

[24:51]  ² tn The verb διχοτομέω (dicotomew) means to cut an object into two parts (L&N 19.19). This is an extremely severe punishment compared to the other two later punishments. To translate it simply as “punish” is too mild. If taken literally this servant is dismembered, although it is possible to view the stated punishment as hyperbole (L&N 38.12).