“the darkness outside.” This is a reference to the darkness outside the Kingdom and the great banquet there, which is the darkness of the Lake of Fire. [For more information on the banquet see commentary on Matt. 8:11, “recline at the feast.” For more information on what happens to those people who are not included in the banquet, the unsaved, see commentary on Matt. 8:12. For more on the attributes of the Messianic Kingdom on earth see Appendix 3, “Christ’s Future Kingdom on Earth.” For more about the unsaved being annihilated in the Lake of Fire and not being tortured forever, see Appendix 5: “Annihilation in the Lake of Fire.” For more about the different resurrections—the Resurrection of the Righteous and the Resurrection of the Unrighteous, see commentary on Acts 24:15].
“sobbing and gnashing of teeth.” The mention of sobbing and gnashing of teeth occurs seven times in the Bible (Matt. 8:12; 13:42, 50; 22:13; 24:51; 25:30; Luke 13:28). All of these occurrences are in the Gospels. There is only one future Messianic Kingdom, and it fills the whole earth. The unsaved are not part of that Kingdom but are thrown into the Lake of Fire where there is sobbing and gnashing of teeth (Rev. 20:13-15). [For a more complete explanation of the sobbing and gnashing of teeth, see commentary on Matt. 8:12].