In Chapter 2 - Compounding Joy - Alcorn discusses this, the first of six treasure principles.
A steward manages assets for the owner's benefit. The steward carries no sense of entitlement to the assets he manages. It's his job to find out what the owner wants done with his assets, then carry out his will. P24
Our giving is a reflexive response to the grace of God in our lives. It doesn't come out of our altruism or philanthropy - it comes out of the transforming work of Christ in us. This grace is the action; our giving is the reaction. We give because He first gave to us. The greatest passage on giving in all Scripture ends not with "Congratulations for your generosity," but "Thanks be to God for his indescribable gift!" (2 Corinthians 9:15).
As thunder follows lightning, giving follows grace. When God's grace touches you, you can't help but respond with generous giving...P 30
There have been days when I've lost focus, and then a need arises and God leads me to give. Suddenly I'm infused with energy, purpose, and joy. I feel God's pleasure. P31
Giving jump-starts our relationship with God. It opens our fists so we can receive what God has for us. When we see what it does for others and for us, we open our fists sooner and wider when the next chance comes. P 32
Another benefit of giving is freedom. It's a matter of basic physics. The greater the mass, the greater the hold that mass exerts. The more things we own - the greater their total mass - the more they grip us, setting us in orbit around them. Finally, like a black hole, they suck us in. P 32, 33