Give
Your tithe (10% of your gross income) and your offerings (anything above your tithe, often to donate to a particular ministry) are an expression of your worship. Leviticus 27:30 is where a tithe is mentioned, but there are other biblical references to giving. Your financial contributions support not just the church itself, but the ministry opportunities that God gives us to fulfill.
Give onsite during offering time.
Mail a check to the church.
Give online.