Dr. Wiersbe zeroes in on Satan's attacks as deceiver, destroyer, ruler, and accuser. By understanding the tactics of the enemy, one can be better prepared to detect and withstand the attacks of Satan. The Strategy of Satan outlines a system to defend oneself on the spiritual battleground - by the power of the Holy Spirit - in order to live by faith in God. Wiersbe emphasizes that conquering the enemy comes by obeying God's truth.