QUESTION: What should I do where my Bible and my Greek Lexicon contradict?
ANSWER: Throw out the Lexicon.
EXPLANATION: Oftimes a critic of God's Bible will point to a Lexicon or Greek grammar book for authority in an effort to prove that a word has been mistranslated in the Bible. This is rather foolhardy, and flies in the face of their purported claim to accept the Bible as their final authority in all matters of faith and practice.
It must be remembered that God never claimed that He would provide us with a perfect lexicon or an inerrant Greek grammar. He said that He would provide us with a perfect Bible.
Thus, on the weight of our own acceptance of the Bible as our "final authority in all matters of faith and practice" we must all accept its rendering of the Greek as more accurate and authoritative than the opinion of the fallible human authors of our Greek study guides.