“He who lacks these qualities”
We must never believe that we are saved by any good works. We are saved by the work of Christ alone, applied to us through faith. At the same time, an obedient life is a necessary result of genuine saving faith (James 2:17). Therefore, while Christ alone is the ground of assurance, our sole source of hope and object of trust, we can have no assurance if our faith is not demonstrated in our lives (2 Corinthians 5:17).
Assurance is a gift of God, not enjoyed by a disobedient believer. Read what Peter says.Now for this very reason also, applying all diligence, in your faith supply moral excellence, and in your moral excellence, knowledge; and in your knowledge, self-control, and in your self-control, perseverance, and in your perseverance, godliness; and in your godliness, brotherly kindness, and in your brotherly kindness, Christian love (2 Peter 1:5–7).
What is the purpose of such a virtuous life, such true spiritual character?For if these qualities are yours and are increasing, they render you neither useless nor unfruitful in the true knowledge of our Lord Jesus Christ. For he who lacks these qualities is blind or shortsighted, having forgotten his purification from his former sins. Therefore, brethren, be all the more diligent to make certain about His calling and choosing you; for as long as you practice these things, you will never stumble (2 Peter 1:8–10).
The point is not that we are gaining salvation or even keeping salvation. Those great realities are bound up eternally with the sovereignty of God. Peter’s point is that we may enjoy the sense of assurance, confidence, security that should accompany our entrance into the kingdom.
—John MacArthur, Kingdom Living: Here and Now (Moody, 1980), 10–13.