As you and I both know, the world is a sinful place, and one of the Holy Spirit’s tasks is to convict the world of its sin. No amount of preaching, pleading, or pointing of fingers will bring about the conviction of sin, unless the Holy Spirit is at work in the sinner’s heart. It is the Spirit’s job to convict and teach. And what is the most basic sin of which the world is guilty? Jesus specifies it as unbelief. The convicting power of the Holy Spirit is at work in the world “because they believe not in [CHRIST].” Once a person responds to the Spirit’s conviction and turns to faith in Christ, the other sins he or she practiced will evenly be taken care of. Ultimately, it is the sin of unbelief the Holy Spirit is primarily seeking after to change. Jesus said this in John 16:8-11, “And when [the Holy Spirit] comes, he will convict the world concerning sin and righteousness and judgment: concerning sin, because they do not believe in me; concerning righteousness, because I go to the Father, and you will see me no longer; concerning judgment, because the ruler of this world is judged.”