SIN can be defined in multiple ways:
an immoral act considered to be a transgression against divine law.
In Christian views sin is an evil human act, which violates the rational nature of man as well as God’s nature and his eternal law.
Sin is acting or behaving in a way that does not conform with God’s character or commands. It is about crossing lines that have been laid down for us by God. Sin is thus an act of rebellion and distrust. It is us saying to God: “You don’t get to make the rules! I am capable of deciding right and wrong for myself!”
SIN is tied directly to the flesh. SIN makes you do things that you really don’t want to do. SIN makes you live earthly and not spiritually. You must know that everything happens in the spiritual before the physical. SIN will make you its slaves; which will cause you problems mentally, physically, spiritually and emotionally. THE WAGES OF SIN IS DEATH
ROMANS 7:7 to 7:25 explains perfectly on the power of sin
Our Fight Against Sin
7 You might think I am saying that sin and the law are the same. That is not true. But the law was the only way I could learn what sin means. I would never have known it is wrong to want something that is not mine. But the law said, “You must not want what belongs to someone else.”[a] 8 And sin found a way to use that command and make me want all kinds of things that weren’t mine. So sin came to me because of the command. But without the law, sin has no power. 9 Before I knew the law, I was alive. But when I heard the law’s command, sin began to live, 10 and I died spiritually. The command was meant to bring life, but for me it brought death. 11 Sin found a way to fool me by using the command to make me die.
12 Now the law is holy, and the command is holy and right and good. 13 Does this mean that something that is good brought death to me? No, it was sin that used the good command to bring me death. This shows how terrible sin really is. It can use a good command to produce a result that shows sin at its very worst.
The War Inside Us
14 We know that the law is spiritual, but I am not. I am so human. Sin rules me as if I were its slave. 15 I don’t understand why I act the way I do. I don’t do the good I want to do, and I do the evil I hate. 16 And if I don’t want to do what I do, that means I agree that the law is good. 17 But I am not really the one doing the evil. It is sin living in me that does it. 18 Yes, I know that nothing good lives in me—I mean nothing good lives in the part of me that is not spiritual. I want to do what is good, but I don’t do it. 19 I don’t do the good that I want to do. I do the evil that I don’t want to do. 20 So if I do what I don’t want to do, then I am not really the one doing it. It is the sin living in me that does it.
21 So I have learned this rule: When I want to do good, evil is there with me. 22 In my mind I am happy with God’s law. 23 But I see another law working in my body. That law makes war against the law that my mind accepts. That other law working in my body is the law of sin, and that law makes me its prisoner. 24 What a miserable person I am! Who will save me from this body that brings me death? 25 I thank God for his salvation through Jesus Christ our Lord!
So in my mind I am a slave to God’s law, but in my sinful self I am a slave to the law of sin.
CHECK OUT THIS ARTICLES ON WHAT SIN IS