God is able to work with or without human means. Though He most often uses them, He is not dependent upon them. Furthermore, He will frequently use some means altogether different from that which we would have expected. Sometimes our prayers for deliverance from some particular strait are accompanied by faith to the extent we can foresee some predictable means of deliverance. But God is not dependent upon means that we can foresee. In fact, it seems from experience that God delights to surprise us by His ways of deliverance to remind us that our trust must be in Him and Him alone.