How do false gospels affect believers?

False gospels pose a significant threat to the authentic faith of believers by blurring the line between grace and works. Paul confronts this issue in Galatians 1, expressing astonishment that the Galatians turned to another gospel that lacks grace. This shift not only misleads the faithful but also undermines the essence of the Gospel, which is based on grace alone, through faith alone. By adhering to a false gospel that incorporates works, believers risk losing the assurance of their salvation and becoming ensnared by the very law that condemns.