Are You a Babe or Are You Mature?

The more we seek the Lord's face and the knowledge of His love, the more shall we become acquainted with "the wiles of the devil" and "the fiery darts of the wicked one."  The devil thereby pays us a great compliment; but we must remember that he is powerful and mighty, and if we go in our own strength and power he will certainly defeat us.  We must therefore pray that we may be strengthened with might by His Spirit in the inner man, and also, as the Apostle expresses it in the last chapter of this Epistle, we must "put on the whole armour of God."  Without it we are doomed to failure.  If you seek to be near Christ the devil will bring out all his reserves against you, and you will become aware of the depths of Satan in a manner you have never even imagined.

Christian people who do not know what it is to be subjected to an onslaught of Satan or to a Satanic attack are but babes in Christ.  He has no need to deal in this manner with the babes; but the moment you begin to grow and become a "young man," the moment you become strong and know Christ and His love increasingly, you can expect temptation.

D. Martyn Lloyd-Jones, The Unsearchable Riches of Christ: An Exposition of Ephesians 3, p.258