The question is also if something that is wrong by definition also is something that is sinful? Does wrong always equal sin?

While this interesting discussion continues, I want to being Thursday's study on The Tower of Babel into the topic.

What was wrong with them wanting to build such a high tower to the extent that God did such a supernatural thing as to confound their one language into a multitude of languages?

In terms of 1John 1:8, Yes.

In terms of 1John 3:9, No.

Building a tower, not matter how high, is not inherently bad. But doing anything, no matter how seemingly insignificant, because one does not believe what God said? That's always bad; fatally bad.

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

I dont see this as adressing the question at all.Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.

Neither this.
Though these are some interesting quotes and some hard onces. Its no superficial study to read 1 John.

I suppose that if Noah got drunk because he was not familiar with the effects of fermented wine, then this wouldn't be considered a sin (if we consider that a sin of ignorance does not imply guilt - John 9:41).

So you would say that something considered wrong automatically is also something sinful?

Sorry, I should have been clearer.

The verse was not the answer. The verse defined the question. If you mean sin the way 1Jn 1:8 uses it, then the answer to your question is Yes. If you mean sin the way 1Jn 1:9 uses it, then the answer to your question is No.

I disagree. If doing x is wrong but not a sin, or if doing x is wrong and sin, does not make a difference with either of these verses. As to verse 1:8, if you do x and it is wrong but not a sin, you are sinful nontheless becourse of whatever else you have done. As to verse 3:9, if x is wrong and sin you will be lead not to do it. If I am understanding the verse correctly.

I'm obviously not explaining myself well. Let me back up from 1John and try another way.

As Rosangela referenced, John 9:41 tells us that an event can be a sin (or not) depending on one's level of knowledge (or ignorance). James 4:17 tells us also that what we know can determine whether or not a particular action is sin for us. (See also Rom 3:20, 5:13, 7:8-9; 1Co 15:56.) When you know the difference between right and wrong, and you choose the wrong, you are guilty. When you have no light on the matter, guilt is not imputed to you.

This is how many people view sin. Here's one popular definition of sin: To willfully violate God’s law. Sin is defined in terms of the subjective standard of what the sinner knows and what he chooses to do about it. In short, sin is a choice.

If this is your definition of sin, then the answer is No. Action X may or may not be sin, depending on your knowledge of God's law and your choice to obey or disobey.

But that's not all there is to it. If it was, then Jesus would not have told the disciples to teach all nations. His commission might have been more like, "Do not tell anyone about the things I commanded you; they'll be saved anyway. I'll just teach them when they get to Heaven." There would be no arguments about salvation by faith vs. salvation by works; all would be agreed on salvation by ignorance.

Look at the sin offering described in Leviticus 4. Every sin there is an unintentional sin ("sin through ignorance" in KJV). But every sin there incurs guilt. And every sin there requires the blood of the lamb, which must be offered as soon as the sinner discovers his sin.

This sin is of a different nature from the "sin by choice" described above. In this case, sin is defined by God's objective, immutable law. Sin is sin, regardless of one's knowledge or ignorance. Therefore, the Lamb must die for the sin, whether or not the sinner knows about it. The only question is, "When will the sinner find out about his sin, and will he take advantage of the Lamb's blood?" In short, sin is a state of being.

If this is your definition of sin, then the answer is Yes. Action X is a sin if it is wrong (i.e. incongruent with God's will).

Hope that clarifies.