A great deal of the Bible is metaphorical and is not imo supposed to be any kind of literal interpretation. The misunderstanding of which leads many astray and leads them to compartmentalise and sweep under the carpet the many contradictions and problems that come form attempting to take much Bible text as literal truth. Much of the works are metaphorical, allegorical and cryptic. For example much of Genesis is not actually talking about the creation of the world/universe, it is allegorically talking about something completely different.
The real spiritual search begins when we have the courage to realise that our tradition literal interpretation of the Bible has been incorrect imo.
I don't believe that it's is accurate to say 'a great deal' of the Bible is metaphorical. For, typically where pericopes are intended to be not taken as literal, the majority of the time it stipulates the narration as such. Jesus' parables were either preceded with the clause that he was speaking in parables, or asserted afterwards that they were. Equally Ezekiel, Isaiah, and Jeremiah stated clearly that what they received were visions, both Joseph and Daniel also expressed their oracles as dreams or illusions inspired from God.
In other words, we shouldn't make our hermeneutics subjective - we decide for ourselves what is to interpreted as allegorical, hyperbole, anthropomorphism, metaphorical, etc... Unless otherwise stipulated by the Bible, or when we enter into the bizarre*, we should always take a literal stance on exegeting Scripture.
*Bizarre meaning, for example, when Jesus says to severe your body parts if they offend you, or when he exhorts us to eat his flesh and blood, or that we are to be born-again. Wisdom should allow us to make this differentiation, for again, one is prompted by the radical nature of things being spoken of.
Genesis is literal, for other parts of the Bible confirm its veracity. I believe that God created things old, Adam was neither a fetus nor an embryo, nor was Eve, neither were that animals that God made. It takes two to germinate life, there also must be other pre-existing sources of life and nutrition, in order to sustain these living creatures. Therefore, God had to start somewhere, and it demands that He did so by beginning with mature creatures and life.
Exodus 20:9-11
20:9. "Six days you shall labor and do all your work, 10. but the seventh day is a sabbath of the LORD your God; in it you shall not do any work, you or your son or your daughter, your male or your female servant or your cattle or your sojourner who stays with you. 11. "
For in six days the LORD made the heavens and the earth, the sea and all that is in them, and rested on the seventh day; therefore the LORD blessed the sabbath day and made it holy.
Luke 13:14-14
13:14. But the synagogue official, indignant because Jesus had healed on the Sabbath, began saying to the crowd in response, "There are six days in which work should be done; so come during them and get healed, and not on the Sabbath day."