Alma 44:4

"Now ye see that this is the true faith of God; yea, ye see that God will support, and keep, and preserve us, so long as we are faithful unto him, and unto our faith, and our religion; and never will the Lord suffer that we shall be destroyed except we should fall into transgression and deny our faith."

Those who have true faith of God will be protected by Him.  God will not destroy His faithful people, rather he will bless and protect them.  This does not mean that they will not go through hard times and suffer great trials.  Those things are important parts of mortal life.  But, God will be ever aware of their needs and will comfort them.