The purpose of John's letter, stated in 1 John 2:26, is protection: "These things I have written to you concerning those who are trying to deceive you". Here’s the warning - deceivers can be within the church, functioning as Satan's mouthpieces, often appealing to our hurts or desires. Deceivers often present well, suggesting, like Satan in the Garden, that God "didn't really mean" His commands. The antidote to deception is to Remain in the truth that you first received. This requires making Scripture the unwavering standard; if what someone says conflicts with the Word, Scripture is right. While the world may view this trust as "blind faith," we must maintain this tension and stay vigilant, as Satan seeks to deceive during both good and hard times.