Man is both body and soul. We must fill our physical body with many kinds of foods to make it alive. Likewise, we must also fill our souls with the word of God. We are doing what the famous evangelist wishes to do if he could live again. The word 'faith' goes with the word 'prayer'.
Prayer is the same as faith.
When we have faith in God, we can pray to God. Sometimes we feel very vague, and it seems impossible to be done. Of course, we cannot do it. But we can pray so that our prayers may be answered by God. We are weak, but we believe that everything is possible because God promised that he will hear our prayers.