Mosiah 23:23

"For behold, I will show unto you that they were brought into bondage, and none could deliver them but the Lord their God, yea, even the God of Abraham and Isaac and of Jacob."

Alma and his people fled into the wilderness because the Lord told them to.  After a while the Lamanites found them and put them into bondage. The only way that they could get out of bondage was through the help of God.  I like that God knew that they were in bondage, but He still wanted them to come to Him before saving them.  God knows exactly what we are going through and how to help us out.  We just need to ask Him and have faith that he will help us.