Gordon, Luther translated the Bible to German. His Greek and his Hebrew didn't lead him to accept the Sabbath. Yet you can't say he was lost, neither can you say his Bible version can't be trusted.
As I said, if you can't trust Greek scholars, then you must be able to read the Bible in Greek - and the Greek used in the Bible is a dead language, so you will have to learn it with a Greek scholar.

I've never read anything so absurd! How long have you studied Greek? So a Greek scholar, who wrote a Greek lexicon, doesn't know what he is talking about?

Joseph Henry Thayer (November 7, 1828—November 26, 1901), US biblical scholar, was born in Boston, Massachusetts. ... Beginning in 1870, Thayer was a member of the American Bible Revision Committee and recording secretary of the New Testament company (working on the Revised Version). Thayer's chief works were his translation of Grimm's Wilke's Clavis Novi Testamenti (1886; revised 1889) as A Greek-English Lexicon of the New Testament, and his New Testament Bibliography (1890). Thayer spent 25 years working on his Lexicon, and made thousands of revisions from Grimm's Wilke's Clavis. Rather unfortunately, Thayer's Lexicon became obsolete quickly.

Gustav Adolf Deissmann's work with the Egyptian papyri was soon to revolutionize New Testament and Koine Greek Lexicography with the publication of his: [1] Bible Studies: Contributions Chiefly from Papyri and Inscriptions to the History of the Language, the Literature, and the Religion of Hellenistic Judaism and Primitive Christianity published in 1901 (2nd edition 1909) and also, [2] Light from the Ancient East: the New Testament Illustrated by Recently Discovered Texts of the Graeco-Roman World London: Hodder & Stoughton, 1910.

These books and similar ones that followed helped confirm and sometimes correct inadequate definitions of many words in the Greek New Testament. With this new and valuable information for studying the Greek of the New Testament, Thayer's Lexicon became a victim of history, being published less than a decade before this papyri revolution.

In February 1891 Thayer published a lecture in which he expressed disagreement with the position of Biblical inerrancy, asserting that his own acceptance of various errors of history and science in the Bible did not materially detract from his belief in the overall soundness of Christianity.

---- Source: http://en.wikipedia.org/wiki/Joseph_Henry_Thayer

Not fulfilling a promise is lying, wherher to a sister or to society; it's bearing a false witness against (to the detriment of) your neighbor. Besides, you are robbing them from the loyalty/veracity/honesty you owe to them as a fellow human being. It's easy (for those who can see the far-reaching claims of the law) to see that these are transgressions of the law.

There's no problem with the verses. The problem is your being obnoxious and arrogant. That says much more about your teachings than the verses you cite in vain. If someone is wrong, just point it out and we can learn truth. But if you stand as an accuser of the brethren, we just learn that you're a jerk. It's up to you what you want us to learn.

Be careful