He is the author of 51 books, 600 audio and 100 videos, many of which has been translated and published in more than 60 languages. Some of the subjects that are covered in his teachings are prayer and fasting, foundations of the Christian faith, spiritual warfare, God's love and marriage and family. His daily radio is translated into Arabic, Chinese (Amoy, Cantonese, Mandarin, Shanghainese, Swatow), Croatian, German, Malagasy, Mongolian, Russian, Tamil, Samoan, Spanish, Bahasa Indonesian, Tongan, Telugu, Malayalam, Kannada, Hindi and many other languages. The radio program continues to reach many people around the world.