Read Genesis 25:27-34 wih Matthew 13:47-52
The Parable of the Dragnet is a grave warning to the visible church of Jesus Christ. As the gospel goes forth, like a dragnet it catches many people. But, like the dragnet, there are both good and bad within, and they will not be separated until the end of the age. As God declares, "they are not all Israel who are of Israel." Since the visible church is the kingdom of Christ here on earth, this aprable warns us not to presume all who are in the church visible are in the kingdom of God.