There is a cost to discipleship. The cost is the cross of self-denial. Love the Lord your God with all your heart, mind, body and strength. Love always costs us something. 

And we are invited to love God with all we are. It will cost you time, money, habits, and relationships, it will cost you the world. Any other message would be cheap grace. Getting saved, as we call it, is just the beginning of the journey not the end of it.

According to Jesus, there is a cost to non-discipleship. And the cost is worse. What is the point of gaining the whole world and losing your soul?