Age Does Not Equal Wisdom - Ecclesiastes 4:13
Wisdom often comes through time and experience. It should not, however, be assumed that old age equals wisdom. The Bible says, "Better is . . . a wise child than an old and foolish king . . . ." Wisdom comes from the Lord, and in distribution of wisdom, He is no respecter of age. Perhaps the wisest statements given by man in the Book of Job were given by a young man named Elihu (Job 32:6). He listened carefully as Job's older friends spewed their foolishness. He thought that "days should speak, and multitude of years should teach wisdom" (Job 32:7). Eventually, he came to the conclusion, "great men are not always wise: neither do the aged understand judgment" (Job 32:9).
A Window of Time to Serve - Acts 13:36
This life offers only a window of time to work for the Lord. Youth and old age both offer their own hindrances to service. In many ways, though not entirely, youth should be spent in learning, middle age in doing, and old age in teaching. Many of the greatest servants of the Lord found in scripture began their journey in youth by learning of the Lord and His ways (1 Kings 18:12; Psalm 71:5; 2 Chronicles 34:3; Job 29:4; Ecclesiastes 12:1). As they approached the prime of life, they put their learning to use by serving the Lord (Numbers 8:24-25). As they passed their prime, they would pass their knowledge on to the next generation in hopes the work of God would go on (2 Timothy 4:1-8).
Christ, Sacrificed for Us - 1 Corinthians 5:7
God demands righteousness, and when His demands are not met, He calls for the shedding of blood for the remission of sins (Hebrews 9:22). Throughout the Old Testament, sacrifices majored on the blood of animals, but they could never take away sins (Hebrews 10:4). God, in mercy, sent His Son to give "himself for us an offering and a sacrifice to God for a sweetsmelling savour" (Ephesians 5:2). Unlike the Old Testament sacrifices, the Lord Jesus was a onetime sacrifice that offered forgiveness of sin for all. In shedding His blood, the Lord Jesus Christ became man's sacrifice, and man need look no further than the shed blood of Christ for a means by which God is satisfied.
Let No Man Despise Thy Youth - 1 Timothy 4:12
Respect is not inherited; it is earned. When writing to young Timothy, Paul admonished him to "let no man despise" his youth. In other words, Timothy was responsible for how others handled his youth. Paul's advice for Timothy was for him to be an example to other believers in every facet of life. If he did that, no man would despise his youth. They would begin to see Timothy as a man and would have no trouble following his leadership. In the beginning, David was disdained because of his youth (1 Samuel 17:33, 42), but when he defeated Goliath and gave Israel the victory, he was given the respect of a hero of war. David did not show up expecting respect, he earned it by his actions.
Rejoice in Each Day - Ecclesiastes 11:9-10
Many people fail to enjoy the present blessings worrying about the possibility of future difficulties. Though each time of life is certainly filled with its difficulties, it is also filled with tremendous opportunities for blessing. When young, a person ought to rejoice in his youth while keeping in mind that God will bring his deeds into judgment. When growing older, people ought to rejoice in getting married, having children, working, and serving the Lord. As one grows older, he can enjoy the benefits of each phase of life knowing that God has special blessings in store for each day. There is no need to miss today's joys worrying about troubles and sorrows that may never come.
Praying for an Open Door - Colossians 4:2-3
Windows of opportunities exist in the lives of the unsaved when they are most receptive to the gospel of Christ. The Devil works hard to keep them in darkness and will distract them by all means necessary (i.e., the death of a loved one, a crying child, a ringing phone, busyness, etc.). The salvation of a soul is a spiritual battle that can only be won by the intervention of the Lord. Not only is there a window of time that the lost are most receptive, but this also suggests a window of opportunity for the saved to speak for Christ. This is the very reason the apostle Paul stressed the importance of the saints of God beseeching the Lord to open a door of utterance (Ephesians 6:19).
I Speak This to Your Shame - 1 Corinthians 15:34
No matter where one lives, there are people who are not saved. There may also be those who do not even have the knowledge of God. Unfortunately, many believers have taken for granted that all who live in certain areas of the world have heard the gospel of Christ, but this is simply not true. As fewer preach and teach the gospel, the number of those ignorant to its truth will increase. As those propagating false doctrine muddy the message of salvation, the responsibility of true believers magnifies. Paul expressed these truths when writing to the believers in Corinth. He told them about the ignorance of some in their midst and put the blame on those who knew the truth, but refused to witness.
All Have Something to Offer - Deuteronomy 32:7
The strength of any people will be determined by how they deal with two people groups: their young and their old. If at any point, either of the two groups becomes a burden, both groups will cease to prosper. The aged members of society are often its wisest. They have had successes and failures and learned from both (Deuteronomy 32:7). They have witnessed the Lord's provision through difficult times (Psalm 37:25). They can instruct the young in practical and spiritual matters (Titus 2). But just as the young feed off of the wisdom of the aged, the older members of society can be nourished by the joy, strength, and life of younger people (Ruth 4:15).
The Natural Effect of Faith - 2 Corinthians 4:13
Faith moves a believer to speak on behalf of the Lord. If an individual believed a building would burn to the ground, he would have a natural urge to want to warn those in danger. In like manner, believers will have a desire to tell the lost of the judgment to come. Any person who truly believes the judgment of God to be real and the way of salvation to be plain will naturally want his loved ones to learn of that way before it is eternally too late. If a person claims to have believed the gospel and be saved, but has no desire to tell others about the gospel, that person ought to examine his salvation to make sure he genuinely believed.
A Threefold Witness - Acts 20:20
The message of a gospel witness is a narrow message, but it can be distributed in a variety of ways. The apostle Paul provided three means by which he ministered the word: he shewed them, he taught them publickly, and he ministered the word from house to house. These three categories still exist today. Believers can preach the gospel in church services, in publick settings, and from house to house. Each believer ought to take part in at least one form of witnessing. Even within these areas the gospel can be spread with audible voice or in print. No believer has any excuse not to give the gospel to others. Every believer can witness, even if it is through the distribution of gospel tracts.