RavenDB Error: I can't access var store from a different class. Any Suggestions

RavenDB Error: var store isn't a global variable. How do I create a class that can use access documentstore? Any comments on why this code refuses to run is greatly appreciated

    class Program
    { 
        static void Main(string[] args)
        {
            var store = new DocumentStore
            {
                Urls = new[] { "http://localhost:8080" },
                Database = "Tasks"
            };

            store.Initialize();

        }
     class OtherProgram

        using (var session = Store.OpenSession())
                    {
                        var task = session.Load<Entity>(combinedInitial + email)
//More code
}