Because God sent his Son for the salvation of the nations, the church sends its sons and daughters to take the message of his salvation to the nations.
No matter how bad things get, God is still working out his own holy will through seen and unseen agents.
This first parable from Matthew provides the key to understanding all the parables and to entering the kingdom of God.
The parable often called the Wheat and the Tares gives hope that one day all will be made right.