1 Timothy 6:17 says, Charge them that are rich in this world, that they be not highminded, nor trust in uncertain riches, but in the living God, who giveth us richly all things to enjoy; Timothy was to also charge the rich to not be high minded or to trust in their riches but to put their faith in God alone. I believe this means that the rich are not to live like they are entitled to more than anyone else and are to use their riches in obedience to God's word. Earthly riches are but a temporary thing.
Verse eighteen adds, That they do good, that they be rich in good works, ready to distribute, willing to communicate; Still continuing to speak to the rich, Timothy was to tell them that God expected them to be rich in good works, helping those in need, and speaking to all people the same way. This still applies to people today.
Verse nineteen continues, Laying up in store for themselves a good foundation against the time to come, that they may lay hold on eternal life. Paul told Timothy that if the rich followed God’s commandments that they would lay up a good foundation in His kingdom. They were not promised any more than anyone else who obeys God’s word, no matter what their status in the world might be. Our work for God in obedience to His word will not get us to heaven, since only faith in Jesus Christ will, but we are still expected to do good works for His glory and to help all those that we can.
Verse twenty states, O Timothy, keep that which is committed to thy trust, avoiding profane and vain babblings, and oppositions of science falsely so called: God then called on Timothy to keep the commandments of God and not to be pulled astray by the vain babblings of others. We need to be just as committed to obeying God’s word today, from preachers and teachers to all Christians.
Verse twenty-one adds, Which some professing have erred concerning the faith. Grace be with thee. Amen. Paul warned Timothy that some people professing to believe in God’s word had erred in their understanding of what His word teaches. They had erred in the faith. There are still people today who profess to be Christians, but they are not obedient to God’s word. We don’t need to be led astray by them. Paul also asked that God's grace be with Timothy, and we as Christians are always under the grace of God. Paul then closed his letter to Timothy with an amen, or so be it. God’s word will always be true, so we must put our faith in it and live by its standards.