Why is the discernment of spiritual truths important for Christians?

In Hebrews 5:14, it is stated that mature believers discern between good and evil by using the Word of God. This discernment is critical for understanding the true nature of salvation and recognizing false teachings. Without proper discernment, Christians may be led astray by misconceptions about how one is saved or by beliefs that undermine the gospel. The mind of Christ equips believers to rightly assess their status before God and the righteousness required for salvation, emphasizing that salvation is by grace alone through faith alone in Christ alone.