Again, the kingdom of heaven is like unto a net, that was cast into the sea, and gathered of every kind: Which, when it was full, they drew to shore, and sat down, and gathered the good into vessels, but cast the bad away. Mat. 13:47-48 KJV
The net illustrates the kingdom of Heaven or realm of profession gathering both good and bad from the sea of humanity. The good and bad remain in the net until the end of the age, when they are separated. This parable shows that not all in the kingdom of Heaven will be converted, much less the whole world, as taught by many.
So shall it be at the end of the world: the angels shall come forth, and sever the wicked from among the just, And shall cast them into the furnace of fire: there shall be wailing and gnashing of teeth. Mat. 13:49-50 KJV
The separation of the evil ones from the good ones takes place at the end of the age, as in the parable of the tares and the wheat. Mt. 13:30, 40, 43, 49-50 The destiny of both classes in both parables is the same.
The parable of the tares and wheat teaches a mixture of good and bad, as well as the purpose and origin of the bad, while this parable teaches that this mixture will continue until the end and that the enemy who caused the bad would be defeated and that the bad will be cast away. The main truth illustrated by this parable is the universal aspect of the sphere of profession. Wherever the net is cast it gathers both classes of people regardless of who they are or what they may be in life and conduct.