The economy of God is very contrary to the economy of this world. In this world, if you want to save something you keep it. But with God, if you want to keep something you must give it away. This includes many aspects of life. In this message, Jesus is saying if you want to save your life then give it away. give it to the Kingdom of God for His use and you will find it.
This is how to receivef that which is eternal.
