This used to bother me a lot. Not so much that I needed to reconcile it for myself but rather how to I reconcile it to help a non believer overcome doubt.
I’ve heard numerous objections to belief: creation, the flood, Leviticus, Lot, Job, slaves, everything - you name it. Every one of those objections is an excuse to not believe.
The bottom line for me now is: “I don’t care”.
If God created the world in six 24 hour periods 6,000 years ago or 6 eons billions of years ago, I don’t care. If God created man and animals to evolve to the point one was made self aware and named him Adam or if Adam appeared the first week of creation, I don’t care.
I believe beyond a shadow of a doubt that God created existence and that I am sinful by nature and need Jesus’ blood to pay for my sins. I want to be like Jesus said to be and I want to spend eternity with him.
I need NO excuse to believe.
A good question is why do so many need excuses to NOT believe?
I've never not believed, so I can't speak for someone who doesn't; but in my observations a major hurdle that is often put in the way of belief is the insistence upon certain things which have never been fundamental to Christian faith. If I weren't already a believer and someone told me that it was necessary, in order for me to put my trust in what God has done in Jesus, that I deny easily demonstrable and observable facts of reality; to insist that one cannot confess this Jesus to be what the Christian religion confesses Him to be unless I also deny observable reality and turn my brain off--then that would immediately turn me off. If the Gospel is made contingent upon demonstrably false ideas, then that would communicate that the Gospel itself is false.
St. Augustine speaks to this effect when he writes that it is a terrible thing when a self-professed Christian speaks on matters they don't know anything about concerning observable and demonstrable facets of reality and they come across as speaking ridiculous and foolish things which non-Christians have some knowledge about through reason. For Augustine the problem isn't that a fool makes themselves look foolish, but that they make a mockery of the faith, of the Scriptures themselves, and of the Gospel.
In Luther's correspondence with Philip Melancthon he writes that if Philip is going to be a preacher of grace, he has to preach real grace. And to preach real grace means addressing real sin, not imaginary sin. Because we are real sinners, in a real world, and the Gospel is about preaching real grace to real people--real sinners--in a real world. One can't be a Christian in an imaginary world, but only in a real world, otherwise Christianity is meaningless. We do not preach an imaginary Christ, or an imaginary Gospel; and we have to believe these things, preach these things, confess these things in a real world of objective reality. And the only world that exists, that we can know, is this one--in which science takes place, in which the age of things can be measured, in which observation and demonstration can show objective facets of our reality. Not that all things are observable and demonstrable--such as matters of faith--but that these matters of faith must exist also in the real, empirical world.
The problem with [Young Earth] Creationism, and religiously-motivated science denial in general, is that it postulates a Christianity for an imaginary world, not a real one. And that renders the whole preaching of the Gospel to nothing more than religious gibberish that is unwilling to engage with things as they are. We don't preach to imaginary people, we don't practice our faith in an imaginary world. But in the real world, with real people, with real problems, with real history, with an objectivity that is demonstrable.
-CryptoLutheran