Comment: Your translation

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In reply to comment: As it was translated to me. (see in situ)

Your translation

is fine. But I still think it's not that simple. You are right to show how complex this is. For example, for something to be a lie, there has to be right to know the truth. A Nazi knocking on the door of a house in WWII asks "are there any Jews hiding in here?" Does the person tell the truth or lie? If they lie, is it really a lie? The answer I believe is they do not have to tell the truth, and that is not a lie. The Nazi, in my example, has no right to that knowledge. It's also the same when a stranger asks a women if she's pregnant. The stranger has no right to that knowledge, therefore the women can say what she wants and it's not wrong.

I think the best Christian understanding of what the 9th commandment requires and forbids is found in a document from the mid 1600's. The Westminster Larger Catechism says this about the command:

Question 144: What are the duties required in the ninth commandment?

Answer: The duties required in the ninth commandment are, the preserving and promoting of truth between man and man, and the good name of our neighbor, as well as our own; appearing and standing for the truth; and from the heart, sincerely, freely, clearly, and fully, speaking the truth, and only the truth, in matters of judgment and justice, and in all other things: Whatsoever; a charitable esteem of our neighbors; loving, desiring, and rejoicing in their good name; sorrowing for, and covering of their infirmities; freely acknowledging of their gifts and graces, defending their innocency; a ready receiving of a good report, and unwillingness to admit of an evil report, concerning them; discouraging talebearers, flatterers, and slanderers; love and care of our own good name, and defending it when need requires; keeping of lawful promises; studying and practicing of: Whatsoever things are true, honest, lovely, and of good report.

Question 145: What are the sins forbidden in the ninth commandment?

Answer: The sins forbidden in the ninth commandment are, all prejudicing the truth, and the good name of our neighbors, as well as our own, especially in public judicature; giving false evidence, suborning false witnesses, wittingly appearing and pleading for an evil cause, outfacing and overbearing the truth; passing unjust sentence, calling evil good, and good evil; rewarding the wicked according to the work of the righteous, and the righteous according to the work of the wicked; forgery, concealing the truth, undue silence in a just cause, and holding our peace when iniquity calls for either a reproof from ourselves, or complaint to others; speaking the truth unseasonably, or maliciously to a wrong end, or perverting it to a wrong meaning, or in doubtful and equivocal expressions, to the prejudice of truth or justice;speaking untruth, lying, slandering, backbiting, detracting, tale bearing, whispering, scoffing, reviling, rash, harsh, and partial censuring; misconstructing intentions, words, and actions; flattering, vainglorious boasting, thinking or speaking too highly or too meanly of ourselves or others; denying the gifts and graces of God; aggravating smaller faults;hiding, excusing, or extenuating of sins, when called to a free confession;unnecessary discovering of infirmities; raising false rumors, receiving and countenancing evil reports, and stopping our ears against just defense; evil suspicion; envying or grieving at the deserved credit of any, endeavoring or desiring to impair it, rejoicing in their disgrace and infamy; scornful contempt, fond admiration; breach of lawful promises; neglecting such things as are of good report, and practicing, or not avoiding ourselves, or not hindering: What we can in others, such things as procure an ill name.

"Be a listener only, keep within yourself, and endeavor to establish with yourself the habit of silence, especially on politics." -Thomas Jefferson