3 Nephi 3:4
1830 Edition
And I knowing of their unconquerable spirit, having proved them in the field of battle, and knowing of their everlasting hatred towards you, because of the many wrongs which ye have done unto them, therefore if they should come down against you, they would visit you with utter destruction;
Changes
And I, knowing of their unconquerable spirit, having proved them in the field of battle, and knowing of their everlasting hatred towards you, because of the many wrongs which ye have done unto them, therefore if they should come down against you, they would visit you with utter destruction;.
Simple English
I know their spirit cannot be beaten. I have seen them fight in battle. I know they hate you forever. This is because you have done many wrong things to them. So if they come against you, they will completely destroy you.
Paraphrase
I know their unconquerable spirit—I’ve seen them in battle. And I know their burning hatred toward you because of the wrongs you’ve done them. If they come down against you, they’ll leave nothing standing.