Here are some principles and recommendations in how to “take every thought captive to obey Christ” (2 Corinthians 10:3-5)
Remain faithful in the reading and study of the Holy Scriptures, which are God’s cognitive revelation of himself and the ways of salvation (2 Timothy 3:15-16). Acquire and use study aids such as one or more study Bibles. I recommend The Apologetics Study Bible, The Reformation Study Bible, The NET Bible, and The NIV Study Bible. Of course, there are many other tools such as commentaries and other helps. The excellent commentaries of John Calvin and Matthew Henry are available on line for no charge.
2. Discern your unique calling as a Christian. No one can do everything, so we must concentrate our energies where we are gifted and in accordance to God’s leading in our day. I highly recommend Os Guinness book on this vital topic, The Call. See also John Piper, Don’t Waste Your Life.
3. Be involved in a Bible-believing local church and seek to serve through what you have learned. Biblically, we are responsible to use what we know wisely and for the glory of God. We should not hide our gifts under a table, but employ them to build up the church and witness to the world (Matthew 5; Ephesians 4:15). Specifically:
A. Develop adult education classes on the Christian worldview, biblical interpretation, theology, apologetics, and social issues.
B. Make sure your church has some way of preparing high-school students for college. Many churched teenagers either put aside their Christian convictions or lose them during this time. For how high-school students in the church tend to think, see Christian Smith, Soul Searching. Also consult the essay “Faithful Christianity in College” by Douglas Groothuis and Sarah Geis at: http://www.patheos.com/blogs/philosophicalfragments/2013/04/09/faithful-christianity-in-college
C. Be involved as a mentor to those who can benefit from your gifts and what you have learned through The Centurion program. Try to find a suitable mentor for yourself as well (Proverbs 27:17; 2 Timothy 2:2).