Giving is so much more than money...but it does include money.
Returning to God the portion He has put on our heart to give is an important part of Christian life.
God is generous and so he calls us to be as well. What we do with what God has given us shows the world where our hearts are at and helps proclaim the gospel. We want to glorify God with every area of our lives, and that includes what we do with our finances.