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.
Luke 6:38 - Give and it shall be given unto you, good measure, pressed down and shaken together and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again.