Matthew 8:12
but the children of the Kingdom will be thrown out into the outer darkness. There will be weeping and gnashing of teeth.”
World English Bible (Public Domain)
In context
Before · Matthew 8:10–11
10When Jesus heard it, he marveled and said to those who followed, “Most certainly I tell you, I haven’t found so great a faith, not even in Israel. 11I tell you that many will come from the east and the west, and will sit down with Abraham, Isaac, and Jacob in the Kingdom of Heaven,
12but the children of the Kingdom will be thrown out into the outer darkness. There will be weeping and gnashing of teeth.”