A sure way of discerning if the one who is teaching spiritual things is truly Spirit-filled-and-controlled, which they must be in order to properly teach God's eternal Truth, is to look for the signs of the Spirit indwelling and enthroned in the heart and life of the would-be teacher.
- Does the would-be teacher evidence in his/her character the "fruit of the Spirit"? (Galatians 5:22-24; Ephesians 5:9; James 3:1-18)
- Does the would-be teacher, speak often of their own personal experience of the life and work of the Spirit within them? (John 16:8; Philippians 2:13; 1 Corinthians 2:10-16; 2 Corinthians 1:3-4; 2 Corinthians 3:18; Ephesians 3:16, etc.)
- Does the would-be teacher operate in the power of the Holy Spirit? (Acts 1:8; Romans 15:18-19; 1 Corinthians 2:4-5; 1 Thessalonians 1:5, etc.)
- Does the would-be teacher demonstrate a deep familiarity with God's word, able to correctly explain its meaning and application to practical living? (Matthew 22:29; Romans 10:2-3; 2 Peter 3:16; Hebrew 5:12-14, 2 Timothy 2:15, etc.)
Your ability to properly discern the fitness of a person to teach spiritual things is, of course, predicated upon your own spiritual health. Carnal, spiritually-immature people always gravitate to teachers who are just like them. Likewise, spiritually-mature, wise, Spirit-controlled lovers of God are naturally drawn to similarly mature, God-centered teachers.
Unfortunately, the Church in the West has taken up a worldly deference to the "expert," automatically giving respect and trust to Christians who hold a degree from a seminary or Bible school. But a seminary degree cannot confer spiritual wisdom, holiness and love for God upon a person; a seminary degree cannot produce a Spirit-controlled-and-filled life; a seminary degree cannot make up for decades of daily, life-transforming experience with God.
In my experience over fifty years within the western Church, I've observed that Christians often pursue seminary training primarily in order to rise to greater spheres of power and prestige within the institutional Church. It is precisely because immediate and unquestioning deference is accorded to the seminarian that those who wish to have such deference spend many tens of thousands of dollars to obtain their credentials. Such expense will pay off quickly if the seminarian can land a job with a mega-church, write a few self-help books, maybe create some video series, and gain a cult-following of loyal fans. And the incredible power one can hold in a church that blindly defers to one's credentials and lifts one up on a pedestal of can-do-no-wrong authority! Think: Ravi Zacharias, or John Paul Miller, or Tony Evans, or Steven Furtyk, or Todd White, or Benny Hinn. The list of such characters seems endless, these days.