Moroni warns against that kind of lazy approach. We should pray as if all depended on the Lord and work as if all depended on us. It is the combination of faith and work that results in miracles.
11 Behold, could ye suppose that ye could sit upon your thrones, and because of the exceeding goodness of God ye could do nothing and he would deliver you? Behold, if ye have supposed this ye have supposed in vain.
21 Or do ye suppose that the Lord will still deliver us, while we sit upon our thrones and do not make use of the means which the Lord has provided for us?
In Moroni's words, we need to "begin to be up and doing."