Stewardship is acknowledging and caring for what has been entrusted to us: our world cannot be fully alive, we cannot be fully ourselves until we attain thanksgiving and generosity.
Giving is integral to spiritual growth as you become aware of all that God has already given you, you experience thankfulness. Deep thanksgiving translates into a desire to be generous: wanting to help God with what God is trying to get done in the world.
It is possible to give without loving, but it is impossible to love without giving. The offering acceptable to God is our gratitude shown in our sharing with others. Because we love God. Because God loved us first.