Listen not to the suggestion that the corruption of your old nature would render holiness an impossibility. In your flesh dwells no good thing, and that flesh, though crucified with Christ, is not yet dead, but will continually seek to rise and lead you to evil. But the Father is the Husbandman. He has grafted the life of Christ on your life. That holy life is mightier than your evil life; under the watchful care of the Husbandman, that new life can keep down the workings of the evil life within you. The evil nature is there, with its unchanged tendency to rise up and show itself. But the new nature is there too–the living Christ, your sanctification, is there–and through Him all your powers can be sanctified as they rise into life, and be made to bear fruit to the glory of the Father.
And now, if you would live a holy life, abide in Christ your sanctification. Look upon Him as the Holy One of God, made man that He might communicate to us the holiness of God. Listen when Scripture teaches that there is within you a new nature, a new man, created in Christ Jesus in righteousness and true holiness. Remember that this holy nature which is in you is singularly fitted for living a holy life, and performing all holy duties, as much so as the old nature is for doing evil. Understand that this holy nature within you has its root and life in Christ in heaven, and can only grow and become strong as the intercourse between it and its source is uninterrupted. And above all, believe most confidently that Jesus Christ Himself delights in maintaining that new nature within you, and imparting to it His own strength and wisdom for its work. Let that faith lead you daily to the surrender of all self-confidence, and the confession of the utter corruption of all there is in you by nature. Let it fill you with a quiet and assured confidence that you are indeed able to do what the Father expects of you as His child, under the covenant of His grace, because you have Christ strengthening you. Let it teach you to lay yourself and your services on the altar as spiritual sacrifices, holy and acceptable in His sight, a sweet-smelling savor. Look not upon a life of holiness as a strain and an effort, but as the natural outgrowth of the life of Christ within you. And let ever again a quiet, hopeful, gladsome faith hold itself assured that all you need for a holy life will most assuredly be given you out of the holiness of Jesus. Thus will you understand and prove what it is to abide in Christ our sanctification.
Andrew Murray, Abide in Christ (Kindle Edition)