Elisabeth Elliot said this quote
“ Prayer is a law of the universe. As God has ordained that certain physical laws should govern the law of this universe, so He has ordained the spiritual law. Books simply will not stay put on the table without the operation of gravity - although God could cause them, by divine fiat, to stay. Certain things simply will not happen without the operation of prayer, although God could cause them, by divine fiat, to happen. The Bible is full o examples of people doing what they could do and asking God to do what they couldn't do. In other words, the pattern given to us is both to work and pray. ”