Ether 2:10

for behold, this is a land which is choice above all other lands; wherefore he that doth possess it shall serve God, or shall be swept off; for it is the everlasting decrees of God. And it is not until the fulness of iniquity among the children of the land, that they are swept off.

This is a land that is the best of all lands. So whoever lives here must serve God or be destroyed. This is God’s rule forever. People are only destroyed when they have become really bad.

This is a land better than any other. Whoever possesses it must serve God or be swept away. That’s God’s everlasting decree. But people aren’t swept off until wickedness has completely taken over.