The grand, infallible book is our sole court of appeal, the sword of the Spirit in the spiritual battles that await us. I zealously exhort you to take this part of the whole armor of God that you may be able to resist the great enemy of our souls. I commend to you this unfailing weapon “It is written.”…This is our Champion’s own weapon. When Jesus Christ was assailed by Satan in the wilderness, He had a great choice of weapons with which to fight Satan, but He took none but this sword of the Spirit: “It is written.”…”It is written” enabled Him to look down from the dizzy height and baffle the tempter still…. “It is written” swept aside the snares of ambition and laughed at the fascination of power. No change in His mode of warfare was required. The infallible Word vailed in every position in which our Lord found Himself, and so shall it be with us.
Satan has in fact a plan against the saints of the Most High which is to wear them out. What is meant by this phrase, “wear out”? It has in it the idea of reducing a little this minute, then reducing a little further the next minute. Reduce a little today, reduce a little tomorrow. Thus the wearing out is almost imperceptible; nevertheless, it is a reducing. The wearing down is scarcely an activity of which one is conscious, yet the end result is that there is nothing left. He will take away your prayer life little by little, and cause you to trust God less and less and yourself more and more, a little at a time. He will make you feel somewhat cleverer than before. Step by step, you are misled to rely more on your own gift, and step by step your heart is enticed away from the Lord. Now, were Satan to strike the children of God with great force at one time, they would know exactly how to resist the enemy since they would immediately recognize his work. He uses the method of gradualism to wear down the people of God.
When the devil knocks at the door of my heart, I take Jesus by the hand. I ask Him to go with me to answer the door. When I open the door, the devil sees me and Jesus standing hand in hand and he says, “Excuse me, I must be at the wrong place.” He leaves.
I believe the reason many Christians are so dull and lifeless in their faith is because they are not in the battle, not using their weapons, not advancing against the enemy.