Sin is the transgression of a divine command meaning it is an act, the violation of, or want of obedience to the revealed Word of God. Sin is the denial of the divine right to command, representing lawlessness or spiritual anarchy. It is failure to attain to the divine standard otherwise known as missing the mark.
1 John 2:1-2 my little children, these things I write to you, that you may not sin. And if anyone sins, we have an Advocate with the Father, Jesus Christ the righteous. And He Himself is the propitiation for our sins, and not for ours only but also for the whole world.
The problem of sin in the Christianity, all Christians sin no matter who you are, even if you think you are the most perfect person that ever came forth, you still have sin in your life. All Christians do! No Christian can have day-by-day victory over sin and live the happy, joyful, triumphant life, until he or she faces the true facts about sin in their own nature, sin in his own life, what sin will do and what do about it. Remember what it says in Jeremiah 17:9, "The heart is deceitful above all things, and desperately wicked; who can know it?
1 John 1:7-9 but if we walk in the light as He is in the light, we have fellowship with one another, and the blood of Jesus Christ His Son cleanses us from all sin. If we say that we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.
According to Scripture, we now, present tense, have sin. All of us have sin in our hearts and lives. If we say we have not we are simply deceiving ourselves. To say that we have no sin is not the truth.
I must be frank here that all Christians have two natures, to better understand why Christians sin, we must understand the difference in the two natures we as Christian have. We have an old nature and a new nature. We are to put on the new nature while putting off the old nature. Ephesians 4:22-24 ...that you put off, concerning your former conduct, the old man which grows corrupt according to the deceitful lusts, and be renewed in the spirit of your mind, and that you put on the new man which was created according to God, in righteousness and true holiness.
What we have to understand is that these two natures war with each other and the sinful nature sometimes wins out over the new nature and thus we fall into the trap of sinful behavior as Christians. We see this struggle in Paul's writings to the Romans. The two-fold nature is seen in Paul's writings. Romans 7:15-20 for what I am doing, I do not understand. For what I will to do, that I do not practice; but what I hate, that I do. If, then, I do what I will not to do, I agree with the law that it is good. But now, it is no longer I who do it, but sin that dwells in me. For I know that in me (that is, in my flesh) nothing good dwells; for two will is present with me, but how to perform what is good I do not find. For the good that I will to do, I do not do; but the evil I will not to do, that I practice. Now if I do what I will not to do, it is no longer I who do it, but sin that dwells in me.
We have seen that the Christians sins because he stills struggles with the old nature, but a true Christian has a new nature that is convicting Him of the sin in his or her life and moving them forward in God's grace and victory over sin.
Even though God's grace covers us this does not give us a license to continue in known sin. When we continue in sin without any conviction coming from the new nature, which is born after God, we should question ourselves as to whether the new man even exists. If it doesn't, then we have not known God. Biblical Examples of Righteous People Who Sinned. Lot was called a righteous man. As we have already seen, Lot is an example of a worldly Christian, who put money and business ahead of serving the Lord. You might say he was saved so as by fire. He lost everything but his soul. He failed to win his wife, his children, his sons-in-law and the people of Sodom. He called the wicked, "brethren". He sinned by living a worldly life and yet he was called a righteous man.
David is a tragic example of a man who sinned. After David was redeemed by the Lord, a man after God's own heart, who was inspired by the Holy Spirit to write many of the wonderful psalms, he fell into gross sin. He committed adultery, and then tried to cover it up by having Bathsheba's husband murdered. David suffered terribly for his sins. His baby died under the hand of God. Tamor, his daughter was raped by a half brother, Annon. Absalom killed Annon. Absalom tried to steal the throne from David and was killed. What a price David paid for his sins! God chastises every Christian who sins, yet Christians do sin, even as David did.
Peter Sinned. On the night before Jesus' death and crucifixion Peter swore, cursed and denied that He knew Jesus. He later quit the ministry and went back to the fishing business. Later on, after the Day of Pentecost, Peter compromised the truth, forcing the apostle Paul to rebuke him openly to his face. He was a saved man.
They were all convicted by their sin because of the new nature. Everyone one of these men had two natures. With the old nature Lot stayed in Sodom, made money, and let his family and the town go to hell in the midst of God's judgment. But the new nature within him rebuked him continually. David sinned, but his heartbroken cry for forgiveness in Psalm 51 shows how desperately his heart wanted to do right, and how sorry he was for his sin. The old nature leads a Christian into sin, but the new nature never lets a Christian be happy in sin. When Peter heard the rooster crow as Jesus had predicted he went out and wept bitterly. .Does this mean that anybody whoever sins proves he has never known God or been saved? No! This means that the new nature, the born again nature, the new heart of the converted person cannot sin. The old man or nature sins, but the new man do not sin and cannot sin. Let's keep in mind that the new man's nature is to bring the old nature unto subjection and submission. May the Lord help us from the power of sin. Amen.