Satan is well aware that the weakest soul who abides in Christ is more than a match for the hosts of darkness, and that, should he reveal himself openly, he would be met and resisted. Therefore he seeks to draw away the soldiers of the cross from their strong fortification, while he lies in ambush with his forces, ready to destroy all who venture upon his ground. Only in humble reliance upon God, and obedience to all His commandments, can we be secure.
– The Great Controversy, pg. 530