In the Name of the Father and of the Son and of the Holy Spirit. Amen.
What do you have that was not a gift? What do you have that you have not received from the hand of another? Your body is the product of the design of God and the flesh of man. Your life is a gift sustained by the providence of God. All that you have and all that you are is a gift from God, who has created you and called you into being.
What do you have that was not a gift? You have sin. You have the disease of concupiscence, that ancient evil infection that corrupts your entire being with a bottomless desire for all things opposed to God. This, even, was an inheritance received from your fathers and forefathers before you, who received it from their fathers, all the way back to our first-father, Adam. But your sin is your own. It is the product of your own sinful nature, which finds ever more inventive ways to flout the command and promise of God.