Alma 37:31

yea, and cursed be the land forever and ever unto those workers of darkness and secret combinations, even unto destruction, except they repent before they are fully ripe.

Cursed is the land forever and ever to those workers of darkness and secret groups. They will be destroyed, except they turn from their sins before they are fully ripe.

The land is cursed forever against these workers of darkness and secret combinations—cursed to their destruction—unless they repent before they’re fully ripe.