John 15:4 Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can you, except you abide in me. 5 I am the vine, you are the branches: He that abides in me, and I in him, the same bringeth forth much fruit: for without me you can do nothing.
[D.A. pp 324] When the soul surrenders itself to Christ, a new power takes possession of the new heart. A change is wrought which man can never accomplish for himself. It is a supernatural work, bringing a supernatural element into human nature. The soul that is yielded to Christ becomes His own fortress, which He holds in a revolted world, and He intends that no authority shall be known in it but His own.
A soul thus kept in possession by the heavenly agencies is impregnable to the assaults of Satan. But unless we do yield ourselves to the control of Christ, we shall be dominated by the wicked one. We must inevitably be under the control of the one or the other of the two great powers that are contending for the supremacy of the world. It is not necessary for us deliberately to choose the service of the kingdom of darkness in order to come under its dominion.
We have only to neglect to ally ourselves with the kingdom of light. If we do not co-operate with the heavenly agencies, Satan will take possession of the heart, and will make it his abiding place. The only defense against evil is the indwelling of Christ in the heart through faith in His righteousness. Unless we become vitally connected with God, we can never resist the unhallowed effects of self-love, self-indulgence, and temptation to sin.
Romans 8:5 For they that are after the flesh do mind the things of the flesh; but they that are after the Spirit the things of the Spirit. 6 For to be carnally minded is death; but to be spiritually minded is life and peace. 7 Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be. 8 So then they that are in the flesh cannot please God.
May The Lord add His blessing to the study of His word. God bless!