Matthew 13:49

“So will it be in the end of the world (age), the angels will come forth, and sever the wicked from among the righteous, and will cast them into the furnace of fire. There will be the weeping and the gnashing of teeth.”

The central point behind this parable is the fate of the ‘bad' fish (compare Ecclesiastes 9:12). They illustrate the fact that the angels will come forth at the end of the age (for the phrase compare Matthew 13:40) and will separate the ‘evil' (poneros) from among the righteous. What is ‘evil' is easily defined. It is whatever is not under the Kingly Rule of Heaven. The whole world outside of Christ lies in the arms of the Evil One (1 John 5:19). And they will be cast into the destructive fire, and will weep and gnash their teeth as they recognise all that they have lost by not receiving and coming under the Kingly Rule of Heaven (compare Matthew 8:12). For ‘the furnace of fire' compare on Matthew 13:42 above.