Genesis 2:19 and Genesis 3:19-20

Genesis 3:20, “And Adam called his wife's name Eve; because she was the mother of all living.”

One reason why I believe in an old earth is found in the Old Testament book of Genesis...

Genesis 2:19-20, “And out of the ground the LORD God formed every beast of the field, and every fowl of the air; and brought them unto Adam to see what he would call them: and whatsoever Adam called every living creature, that was the name thereof. And Adam gave names to all cattle, and to the fowl of the air, and to every beast of the field; but for Adam there was not found an help meet for him.”

The Bible says that Adam named “every living creature.” But he didn't name the dinosaurs, because they weren't alive at the time. Modern scientists named the dinosaurs in the 19th and 20th centuries, as they were unearthed by archaeologists.

If tyrannosauruses, velociraptors, brontosaurs, pterodactyls and other prehistoric creatures had been alive in Adam's time, then he would have named them, but he clearly didn't. This is further compelling biblical evidence that the earth is very old, and that there was a prehistoric land where dinosaurs lived before mankind was created (at approximately 6,000 BC). Psalms 102:25, “Of old hast thou laid the foundation of the earth: and the heavens are the work of thy hands.” The psalmist David penned these inspired words around 1,000 BC. I support the Gap Principle between Genesis 1:1 and 1:2.