Prayer Works

"But this is a proverbial expression; intimating that we are to believe that nothing is impossible with God, and therefore that what he has promised shall certainly be performed, though to us it seem impossible. It was among the Jews a usual commendation of their learned Rabbin, that they were removers of mountains, that is, could solve the greatest difficulties; now this may be done by faith acted on the word of God, which will bring great and strange things to pass."

Matthew Henry