God's word calls us to obediently "tithe" (give 10%) of what He gives us to do His kingdom work. "Offerings" given to God are gifts above and beyond our tithes. Tithes and offerings are vital to the health of our church and provide for all the areas fo ministry and outerach.
2 Corinthians 9:7-8 "Each one must give as he has decided in his heart, not reluctantly or under compulsion, for God loves a cheerful giver. And God is able to make all grace abound to you, so that having all sufficiency in all things at all times, you may abound in every good work."