In the context of maintaining physical strength and conditioning or mental acuity, the phrase “use it or lose it” is commonly applied. If muscles aren’t used, the body is designed in such a way that those muscles lose strength. If our minds aren’t engaged in active thought, memory is lost, and rebuilding our understanding becomes more difficult. The basic principle is simple — if we do not actively put effort into keeping what we have worked to obtain, we will lose it.
This principle applies to our spiritual growth and understanding as well. The job of a Christian is to learn about the Truth, to become converted in the way in which life is lived, and to overcome sin. There will always be more work for a Christian in this regard, until he or she becomes perfected at the time of Christ’s return. Along the way in the journey, milestones will be reached, successes will be experienced, understanding will be obtained, and battles against sin will be won. However, these achievements are fleeting unless effort is continually applied to the maintenance of those successes. If we do not use the understanding that we have obtained, and exercise our proven ability to overcome sin, we will fall backwards and begin losing the spiritual ground we have gained.
The topic of endurance is mentioned in several biblical writings to the early Church for this very reason (compare 1 Corinthians 4:12; 2 Thessalonians 1:4; 2 Timothy 2:3; 2 Timothy 2:12; Hebrews 10:36; Hebrews 12:2). The race of a Christian takes a lifetime to run, and if one begins to lose focus, and ceases to apply effort, he or she will not win the race and will fail to win the prize. Likewise, even when effort is applied in pursuing a direction that is unsupported by the Truth, the result is loss of understanding. With such loss also inevitably comes the loss of the promised full reward (2 John 8), and in extreme cases, salvation (Hebrews 2:1-3). To become converted, only to halt pursuing Christian growth results in failure. We must remember that conversion and baptism are just the beginning of a lifelong transformation that never ends.
The key to avoiding the dire outcome of a neglected conversion is simple. It takes work. By continually working to improve our understanding, and by application improve our way of life, we are destined to succeed. Jesus Christ provides us with this promise, “‘So I say to you, ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you. For everyone who asks receives, and he who seeks finds, and to him who knocks it will be opened’” (Luke 11:9-10). The point that we need to understand is that growth is provided to those who ask for it and actively seek it out. With diligence, our efforts to learn and apply the Truth will be rewarded (compare Hebrews 11:6).
If we are fortunate enough to be blessed with godly understanding in this day and age, then we are obligated to do something with this gift. We must remember that the Truth is powerful and provided for our use! We are urged to take advantage of it, using it to direct our spiritual growth. But the Truth will only work for us if we do our part and work to accept and apply it. The parable of the sower informs us that there are many ways in which the Truth can be received, but only one way that leads to success (compare Matthew 13:18-23). We have an active role to play in receiving and using the Truth. If we want to bear fruit that is pleasing to God, then we must never end our efforts to grow in our spiritual development.
