A very powerful way to worship God is to bring your gifts before him as an act of worship.  This can include gifts of time, talents, or treasures.  The Bible says that God is the giver of every good and perfect gift.  Money is a good gift from God when managed the way God would have us to manage it.  God gives us money in order to provide for us and in order for us to bless others and advance His Kingdom through our financial giving.