Jehovah
Now these dissenters, having the same instruction and the same information of the Nephites, yea, having been instructed in the same knowledge of the Lord, nevertheless, it is strange to relate, not long after their dissensions they became more hardened and impenitent, and more wild, wicked and ferocious than the Lamanites—drinking in with the traditions of the Lamanites; giving way to indolence, and all manner of lasciviousness; yea, entirely forgetting the Lord their God. Alma 47:36
The dissenters had been taught the knowledge of the Lord, which in the Book of Mormon includes knowledge of the coming Christ, yet they forgot Him and became worse than those who never had that light.
How we know: Jehovah is the premortal Christ (Abraham 1:16; D&C 110:3–4)
- alludes to Alma 24:30 — A people once enlightened who fall away become more hardened than before.