The speaker of our poem sounds like the kind of guy who goes for long walks in the woods or fields, and who can have a powerful spiritual experience just by looking at a bird's nest or an earthworm between his feet. He appreciates nature and pays very close attention to it, and to the effects it has on him.
He's also a Christian, and probably pretty devout. For him, the natural world is creation, and so provides a connection to God, the creator. Stories from the Bible (say, about the Garden of Eden or Christ's resurrection) are not abstract stories that he only thinks about on Sundays. They are things he thinks about all the time, and feels are relevant to the world around him.