In reply to Daniel H Fitz.

Of course dinosaurs were created on Day 6. And of course it was 6 literal days. The notion that yom can have several meanings is misleading. In Hebrew, when one uses a number or the words evening or morning, it was meant to be a 24 hour day.

Is that tangential to the the Gospel? Yes, and no. But that is like saying is the Small Catechism or the The entire book of Concord needed for one's salvation? Of course not. Key example is the thief on the cross. But are they important? Most assuredly. So can one believe in an ancient earth and still be saved? Yep. But is causes difficulties with his testimony such as death and disease and extinction with God calling these things "good".

As for who was so and so writing for? Be very careful here. I ask you to consider this: Are the writings Moses' or David's words or are they God's Words? (Hint: Do you ever call the Bible "The Word of God"?) Not saying you are wrong, but just asking you to be careful.

As to understanding the HOW of creation events....I get it. But also be careful again in giving humans too much credit. You do realize that most evolutionists are atheists, so one is not to trust their interpretation of the data. Also know that there are very good evidences for a Young Earth as well as The Flood of Noah's time.
God bless your further pursuit of His Truth as found in His Words to us, as you said, He is eternal and n eternal God will never write a book that goes out of date.