Why is having a genuine faith important for Christians?

Genuine faith is critical for Christians because it is the means by which we are justified and connected to Christ. James 2:17 states that faith without works is dead, indicating that true faith produces obedience and a changed life. This contrasts sharply with the false professions of many who think they know Christ. In Matthew 7:22-23, those who claim to know Jesus but lack a vital, obedient relationship with Him will be told, 'I never knew you.' Therefore, a faith that transforms and results in good works is a hallmark of authentic Christianity, demonstrating our relationship with and commitment to Christ.