You lost all credibility when you believe a theologian over God's Word. What does it mean to you to "have faith"? The Word clearly said "Thinking themselves wise, they became fools!" His ways are not our ways. They are without excuse. His thoughts are higher than our thoughts. There are hundreds of examples of God being wiser and different in his reasoning than man. Why do we always think we can figure Him out? Just trust Him! He raised people from the dead, walks with them in fire without burning, keeps the lions mouths closed, and sent His Son to die for sinners. Just ask yourself, what man would do that? I have been brought to my knees many times knowing that I could never give up my daughter's life to save murderers and liars. I serve a mighty and wonderful, and good God, that would never lie to me, if He were willing to die for me, what would He hold back from me? Fall in love with Him all over again! Don't hold back. He didn't hold anything back from you.
Read Genesis 15:6 and see where rightiousness comes from. It comes from our belief. If you don't belive God then you are self rightious and in trouble with The Judge of Man. There is a song I like by Nicole Nordeman called "Let me not forget to tremble". We have become so arrogant about His Mercy and Grace that we forget that He is God!
This isn't worthy of dispute, but... God's Word as we now have it in the Bible has been translated, re-translated, rewritten, recopied, and reinterpreted many times. So to really get a good sense of the meaning of God's Word, particularly regarding such problematic and difficult sections as Genesis, one must study it. Since I am not a theologian, my level of study is inadequate to the level of analysis that an accurate study of Genesis (and the Bible overall) requires. By consulting these sources in addition to my own effort at understanding, I've been able to achieve a reasonable congruency between the natural revelation -- which is what we see and what we learn about nature -- and the special revelation, which is God's Word in the Bible.
My original reply here was meant to underscore that there is no one "answer" or one fully-agreed to interpretation of the entire Bible. In my denominational affiliation, adherence to the fundamentalist literal interpretation is not required or preferred. And that's why I am not a fundamentalist.