Word of the Lord is "verified, which he spake unto our fathers, saying that: Inasmuch as ye will (not) keep my commandments ye shall (not) prosper in"

1. Jarom 1: 9
   9 And thus being prepared to meet the Lamanites, they did not prosper against us. But the word of the Lord was verified, which he spake unto our fathers, saying that: Inasmuch as ye will keep my commandments ye shall prosper in the land.
2. Omni 1: 6
   6 For the Lord would not suffer, after he had led them out of the land of Jerusalem and kept and preserved them from falling into the hands of their enemies, yea, he would not suffer that the words should not be verified, which he spake unto our fathers, saying that: Inasmuch as ye will not keep my commandments ye shall not prosper in the land.