But solid food is for fullgrown men, even those who by reason of use have their senses exercised to discern good and evil (Hebrews 5:14).
Physical development, for the vast majority of people, is a given. Most children, as long as they are continually nourished, will experience physical maturation. Those are trying times for themselves, their parents, and everyone else who has contact with them! Nevertheless, the maturation process is essential if life will continue. Ideally, the child will be mentally and emotionally maturing while he or she is physically maturing. This is the process by which small children become responsible adults.
Spiritual maturity has the same imperative but is not a “given.” In fact, the Hebrew author is chastising the Hebrew Christians for not maturing spiritually as they should have– even though they should be teachers by now, they still need someone to teach them the basic truths of the faith (Hebrews 5:12-6:4)! It is entirely possible for a believer to live 20, 30, 50, or even 60 years without spiritually maturing.
But this is not what the Lord wants! We are commanded in 2 Peter 3:18 to grow in our knowledge of Jesus Christ. The servant who did nothing to advance his Master’s purposes in Matthew 25:14-30 was cast into the outer darkness, where there is weeping and gnashing of teeth– who wants to experience that fate?
Therefore, it is important for us to grow and mature spiritually. Unlike physical maturity, we must make the determination to mature and to grow in our faith. On the other hand, this means that a believer can mature more rapidly, and reflect a spiritual maturity “greater” than his spiritual “age” as reckoned by human time!
Spiritual maturity is a challenge. It requires us to know God’s Word (2 Timothy 2:15, 3:16-17). How can we grow if we do not know how to grow? How can we learn to do the will of our Lord if we remain ignorant of His will? The growing and maturing believer in Christ will truly be His disciple, sitting at his Master’s feet, learning what he or she should do (cf. Luke 10:38-42).
Maturity requires much more than just “book learning.” Christianity is not a mere intellectual exercise– it is designed to be a lived belief. We demonstrate that we are of Jesus Christ by walking as He walked (1 John 2:6). As the Hebrew author demonstrates, we train our senses to discern good and evil “by reason of use.” It is one thing to know that Jesus teaches us to love our enemy, to turn the other cheek, to do good to all men, and so on (cf. Matthew 5, Luke 6); it is quite another to practice such things and to be enriched through our experience. Just as “hands on” work experience has practical value and provides lessons unable to be fully gleaned through “book learning,” so practicing Christianity has value and provides deeper understanding of what can be gained from studying the Scriptures.
Let none be deceived, however: spiritual maturity has its cost, just as physical maturity does. We grow in faith when our faith is tested– when we are called upon to defend our beliefs in front of a hostile audience (1 Peter 3:15), when we must decide whether we will succumb to temptation or escape (1 Corinthians 10:13), when we experience persecution or suffering (James 1:2-3, 1 Peter 1:6-8), and other such challenges. Sadly, many times we will fail (1 John 1:8); we must then get up, confess our wrongs, learn from them, and allow those experiences to help us grow (1 John 1:9). Furthermore, just as we obtain greater responsibilities as we mature physically, so more is expected of us as we grow spiritually (cf. Matthew 25:14-30, Romans 15:1). As we grow, we can see just how much more growth and maturity is required– there is never a point in this life when we can feel as if we have matured enough or grown up enough, for we can always abound more and more in the work of the Lord (cf. Philippians 3:13-14, 1 Thessalonians 4:1-9).
Growing and maturing in the faith is a challenge, indeed, but failure to grow and mature might very well lead to eternal torment. Growth and maturity come at great cost, but so did our salvation (Philippians 2:5-11)! Let us seek to grow in the grace and knowledge of our Lord Jesus Christ, constantly striving to be more conformed to His image!
Ethan R. Longhenry