Why is it important for Christians to understand the difference between saving faith and false faith?

Recognizing the difference between saving faith and false faith is vital for every Christian as it directly impacts their spiritual well-being and assurance of salvation. Many people may believe in God or follow religious practices; however, if their faith is based on sight or human understanding, as described in John 2:23-24, it is not true saving faith. This understanding prevents individuals from being misled by superficial belief that can fail when tested by trials. The aim of Christian life is to have a faith grounded in the grace of God, which produces spiritual fruit and an assurance based solely on Christ's work rather than personal achievements or experiences.