Sariah waits for her boys to return from getting the Brass Plates. Day after Day she waited and prayed and had faith.  As many days passed Sariah was sure something awful had happened to her boys.  She began to lose her faith and question whether Lehi was a prophet.  She had been obedient and done everything God had asked, even leaving everything but her family behind in Jerusalem and coming to live in the wilderness.  

Sometimes Gods answers to prayers do not come as soon as we would like, or in a way we would like.  

When Sariah's sons returned and told her of their experience.  Sariah knew God had protected her sons and worked miracles!  She did not doubt again.