God is rational, and he has created us as rational beings. The Bible urges us to give the reason for the hope that is in us (1 Peter 3:15, NIV). Indeed, Jesus declared that the greatest commandment is: „You shall love the Lord your God with all … your mind (Matthew 22:37). The apostle Paul added „whatever is true, … think on… ” (Philippians 4:8) Thinking is not an option for the Christian; it is an imperative.
Of course, everyone thinks. But not everyone thinks correctly. The name of the discipline that is geared to correcting this problem is logic. The late professor Gordon H. Clark pressed this point when he boldly, if not entirely accurately, translated John 1:1 this way: „In the beginning was Logic (the Logos). And Logic was with God, and Logic was God.” Of course, God is more than a rational being; he also has feeling and free will. Nonetheless, God is rational, and the principles of good reason do flow from his very nature. Consequently, learning the rules of clear and correct reasoning is more than an academic exercise. For the Christian, it is also a means of spiritual service.
Din prefața cărții Come, let us reason, Norman Geisler și Ronald Brooks