Leviticus 5
(bolded mine)
Apparently, the Lord understands that humans are stupid, and sometimes do things in ignorance. Sins done in ignorance will be held against the sinner "when he comes to know" that he did it. Usually it doesn't take too long, unless the person is in the habit of rejecting knowledge and never thinking about what he's doing (there's judgment for those, too, but that's a topic for another day). In any event, once the person knows that he's sinned in ignorance, he is guilty of a sin he has committed (see bold).
A sin done in ignorance is still a sin, according to the Bible. God's judgment on the matter, though, depends on what the person does about it: however, the sin is still sin.
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A recent discussion came up, and apparently it was important enough to nearly derail an entire thread: most certainly it was distracting enough to quelch an enormous amount of discussion. So I figure it must be of merit to talk about. Lying.
Can you "lie" without realizing it?
Well, first let's look up the word. Since we're talking about a definition, a dictionary's a good place to start.
From http://www.dictionary.com
lie1
noun, verb, lied, ly·ing.
–noun 1. a false statement made with deliberate intent to deceive; an intentional untruth; a falsehood.
2. something intended or serving to convey a false impression; imposture: His flashy car was a lie that deceived no one.
3. an inaccurate or false statement.
4. the charge or accusation of lying: He flung the lie back at his accusers.
–verb (used without object) 5. to speak falsely or utter untruth knowingly, as with intent to deceive.
6. to express what is false; convey a false impression.
–verb (used with object) 7. to bring about or affect by lying (often used reflexively): to lie oneself out of a difficulty; accustomed to lying his way out of difficulties.
Apparently, we have two definitions of what "to lie" means: either to speak falsely with intent to deceive, or to simply express what is false.
Those are the practical definitions.
But does the Bible have anything to say about the topic? That's more important, right?
So let's see.
Revelation 21:8
"But for the cowardly and unbelieving and abominable and murderers and immoral persons and sorcerers and idolaters and all liars, their part will be in the lake that burns with fire and brimstone, which is the second death."
Liar:
pseudes (psyoo-dace') 5572
From pseudomai; untrue, i.e. Erroneous, deceitful, wicked
false, liar.
pseudomai (psyoo'-dom-ahee) 5575
Middle voice of an apparently primary verb; to utter an untruth or attempt to deceive by falsehood
falsely, lie.
It seems that this same dynamic exists in Revelation about whom God will judge as guilty of lies: the Greek word also allows for simply "uttering an untruth", just like the English word.
But which one is being talked about here?
Obviously, those who go about trying to deceive. Proverbs is full of Solomon saying how much the Lord abhors dishonest scales, and those who use them to cheat. If a person is honest, he won't use dishonest scales. If he is honest and is using dishonest scales in ignorance, he is still sinning, and will return what was cheated. However, the Lord will not hold against someone a dynamic of which he is unaware.
However, if the "honest man" never double checked his scales in the first place, he is rejecting knowledge completely (and if someone points it out, and he refuses to double check for any reason, he is in danger of being guilty of the same)
Hosea 4:6
My people are destroyed for lack of knowledge. Because you have rejected knowledge, I also will reject you from being My priest. Since you have forgotten the law of your God, I also will forget your children.
God will destroy those who are in ignorance because they reject knowledge which would bring them out of it. Yes, they were sinning in ignorance, so that sin is not held against them (they were still sinning, as pointed out in Leviticus), but what they are JUDGED for is their REJECTION of knowledge.
So.
What is a lie, according to the Bible?
"You shou not bear false witness against your neighbor"
The sin of "lying" is bearing a false testimony about something to someone. Nothing in the Ten Commandments says a word about the person's intent. Yes, the spirit of the law says "Don't be deceitful", but the letter simply says "Don't speak untrully".
Can a person sin in ignorance?
Yes. That's the first Scripture in this post.
Does that make the concept of "lying" more serious? The fact that an ignorant sin is still sin?
It does to me. Whether or not I meant to deceive, I have born false witness to someone: to them, it doesn't matter whether or not I meant to lead them falsely or not; I did it. And that is what the Lord commands us not to do.
Yes, we fail sometimes (Paul almost never talks about failure: we KNOW we fail), but what matters before God is our attitude. Whether or not we are sinners, we'll probably bear false witness. But a child of God will fix it and try to avoid it at all costs. That's the difference. A Christian will do more than just "not meaning" to do it: he'll do everything he can to avoid actually doing it.
All Bible. Otherwise I wouldn't have the guts to say it. :P