I think that believing in the word of god and watching his amazing grace for us be proclaim should be eneough for those who are serious about the Lord. I myself experience his great works about a month ago, I didn't know what i was going to do about food, rent or even my bills and the Lord provided a way for me, I had to had to learn to trust and believe in the Lord. I was not giving my all towards him and then I heard amessage about giving in order to receive his gift. I now pray to the Lord each and every day and thank him for what he has already done and what he has in store for my future.