11. Therefore, when John says, "Whatsoever is begotten of God overcometh the world: and this is the victory that hath overcome the world, even our faith," his purpose is to admonish Christians that believers must manifest the power and working of faith in life and deed. In fact, his chief aim in writing this text was to reprove false Christians who are pleased to hear the doctrine that we are saved through Christ alone, our works and merits not earning our salvation; and who imagine the hearing of this doctrine constitutes them Christians and that there is no necessity for any effort or contention on their part. They forget that they must, through faith, become new persons fitted to overcome the world and the devil.
12. Victory over the devil is the sign of the true Christian. Thereby we may know men are born of God, may distinguish them from the false children who enjoy but the semblance of God's Word and never experience its power. Such are mere "mondkinder" (moon-children)—still-born, destitute of real divine life, or divine power. It cannot be said we have been born of God when we continue in our old dead and worldly course, and as before lie and live in sin at the devil's pleasure. No, as children of God we must resist the devil and his entire kingdom. If, then, instead of overcoming the world you allow it to overcome you, then, boast as you may of faith and Christ, your own conduct testifies that you are not a child of God.
To illustrate, beginning with some of the lower and grosser sins: If you boast of being a child of God, but still live in fornication, adultery, and such vices, the devil has already overcome you and wrested you from the kingdom of God. If you are miserly, injuring your neighbor by usury, by overcharging, by false wares and fraudulent business, you have permitted the world and your own flesh to overcome you for a penny. If you entertain envy and hatred toward your neighbor, you are at once thereby a captive servant of the devil. The same principle holds in the case of sins more subtle and refined, where the malicious knavery of the devil must be resisted. For instance, the devil deceives with misleading doctrines, impelling men to idolatry, false faith, presumption, despair, blasphemy, and so on. Now, if you yield to him, suffering yourself to be seduced, what will it profit you to boast of the Gospel faith? for you have not properly grasped God's Word, you have not rightly recognized God in Christ, but continue in error, in false fancies, captivated and deceived by the devil.
13. It requires something more than mere human wisdom and skill, more than human power, to withstand and overcome an enemy so formidable as the devil. As said before, the Christian must be fortified with the knowledge of how to guard against his wiles and deceptions and how to withstand him. Hence a Christian is called a person who is born of God. He must be different from an intelligent heathen and a skillful worldling to rightly understand God's Word and apprehend Christ through faith, and must use such knowledge as weapons of offense and defense in the conflict. Thus will he be able to withstand the devil and the world and to gain the victory. God's Word and faith are the power which will bring him through; he cannot be overcome so long as he adheres to them.
In this connection are John's words immediately preceding our text: "This is the love of God, that we keep his commandments; and his commandments are not grievous." Then he goes on, "For whatsoever is begotten of God overcometh the world," etc. Such is the power represented by genuine new birth, that therein the devil, the world and all evil are overcome. Just as, in physical birth, a normal child fully born into the world may overcome a slight offensive disease, while an abnormal or still-born child perishes of its own weakness.
14. For example, if I have faith and am born of God, I will not pollute myself with unchastity and fornication, I will not bring disgrace upon another's spouse or child. The new birth will indeed teach me not to reject shamefully the treasure I have in Christ, not to lose it willingly, and not to drive from me the indwelling Holy Spirit. Faith, if it truly dwells in me, will not permit me to do aught in violation of my conscience and of the Word and the will of God.
Should I be tempted by avarice to deceive and defraud my neighbor, or to close my hand when I should give him aid, if I am a Christian and born anew my faith will protest and turn me from such action. Can I injure my neighbor or permit him to suffer want when I might contribute to his relief, if I am aware that Christ has given his body and shed his blood for me? How can there enter into the heart of the Christian who believes he has received ineffable and eternal treasures through the Son of God, the inclination to permit his neighbor to suffer a trivial want when he can easily extend relief? Much less would it be possible for the Christian to injure or to do injustice to his neighbor for the sake of shamefully gaining some small advantage. Rather he would reflect: "If I am, through Christ, a child of God and an heir of heaven, the sum of this world's goods is far too insignificant to induce me, for the sake of a penny, to deceive or defraud anyone."
Then, too, if the devil tempt you by his tyrannical, factious spirits, or even by your own thoughts, to forsake your pure doctrine for his deceptions, you as a Christian are to resist the temptation, remembering the blessings you have through faith received from Christ in the Gospel; you have been liberated from darkness, blindness and error; have learned rightly to know God; and have obtained the sure consolation of grace and salvation, being aware upon what you must depend in life and death. Why, then, yield to the devil, allowing yourself to be robbed of salvation and eternal life? Why not much rather let go every earthly thing than to deny the Word of God or to permit this blessed consolation to be perverted, falsified and wrested from you?
15. So, then, John says, "This is the victory that hath overcome the world, even our faith." It is, indeed, saying very much for the Christian faith to attribute to it such power over the devil and the world—a power transcending all human ability. It requires an agency greater and higher than human strength to triumph over the devil, especially in the perplexing conflicts of conscience, when he vexes and tortures the heart with terror of God's wrath in the attempt to drive us to despair. At such times all our works must immediately sink out of sight, leaving no help or victory except the faith that clings to the word of Christ the Lord, believing that, for the sake of his beloved Son, God will be merciful and will not condemn us for our sins and unworthiness if we believe in him. Such faith as this stands fast and gains the victory; neither the devil nor the gates of hell can prevail against it.
16. The same is true in all temptations. Before we can resist and overcome, we must have faith to believe that through Christ we have remission of sins and the favor of God; that God gives us help and strength to enable us to stand in the conflict and successfully resist the devil, the world, the flesh and death; that we obtain the victory by the divine power of the Holy Spirit, lacking whose help we all would be far too weak to win. Without faith, we are under the power of the devil and sin, being subject to them by natural birth. We can be liberated in no other way than through faith in Christ.
17. That John has reference to faith in Christ is plainly evident from his query, "Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?" The apostle's purpose therein is to make plain just what the true Scriptural faith is and what it implies. For there are other beliefs which the world calls faith. The Jews, the Turks, the Papists, claim they also believe in God who created heaven and earth. That such belief is not the true faith, however, is proved by the fact of its ineffectiveness. It does not contend and overcome, and it permits the believer to remain as he is, in his natural birth and under the power of the devil and sin.
But the faith which believes Jesus is the Son of God is the true, triumphant sort. It is an invincible power wrought in the hearts of Christians by the Holy Spirit. It is a sure knowledge, that does not gaze and vacillate hither and thither according to its own thoughts. It apprehends God in Christ the Son sent from heaven, through whom God reveals his will and his love and transfers us from sin to grace, from death to a new and eternal life; a refuge and trust that relies not upon its own merit or worthiness, but upon Christ the Son of God, and in his might and power battles against the world and the devil. Therefore, the Christian faith is not the cold, ineffective, empty, lifeless conception which Papists and others imagine it to be; no, it is a living, active power, ever followed by victories and other appropriate fruits. Where such fruits are lacking, faith and the new birth are not there.