Mosiah 15:12

for these are they whose sins he hath borne; these are they for whom he hath died, to redeem them from their transgressions. And now, are they not his seed?

He carried their sins. He died for them to save them from their wrongs. Aren’t they his children?

“These are the ones whose sins he carried. These are the ones he died for—to free them from their wrongs. So aren’t they his children?