Those who become angry at the truth have “the spirit of the devil” in them. That is, they are under the devil’s influence and are deceived. Nephi understood this principle because of his older brothers’ reactions (see 1 Nephi 5:1). When someone becomes angry at the truth, they are in darkness. Christ gave this as one of the signs of the deceived. They argue against the truth and become angry (see 3 Nephi 5:8). Those who are Christ’s, however, join with Nephi in glorying in plainness, even if it cuts or requires repentance. They appreciate the plain direction which allows them to follow in the true path. They appreciate truth, even when it condemns their acts and requires them to change. They glory in Christ, preferring Him over unbelief, traditions of men, or the arm of flesh.1
1 “2 Nephi 33:5–6,” Sept. 6, 2010, blog post.