What does the Bible say about truth in the gospel?

The truth of the gospel is profoundly emphasized in various passages of scripture, particularly in Galatians, where the Apostle Paul confronts the Galatians about their desire to revert to the law. He questions whether he has become their enemy by telling them the truth (Galatians 4:16). This truth is that Christ alone is sufficient for salvation, as indicated by his refusal to submit to added requirements like circumcision (Galatians 2:3). The understanding is that any attempt to include works in salvation corrupts the gospel itself, which is designed to uphold the perfect sufficiency of Christ. In John 4:23-24, it is noted that true worship must be in spirit and truth, further underlining the necessity of adhering to the truth of Christ for genuine worship and relationship with God.