Our God has given so much, and He continues to give generously. We are called to give generously and cheerfully (ref. 2 Corinthians 9). What we do with what God has given us is one indicator of where our hearts are (ref. Matthew 6:21), and it enables us to support the works of our congregation as well as others in need.
We want to glorify God with every area of our lives, and that includes what we do with our finances.