The theory is that this book of the Bible is inspired by God. So, the contents are thought to reflect God as the divine author.
As Jesus revealed to the two disciples with whom He was walking on the road to Emaus (or Emmaus), the Hebrew Scriptures contain hidden references to Him. And, according to Catholic theology, the Father, Son, and Holy Spirit all took part in the creation of the world.
This is hinted at in the use of the Hebrew word “elohim” (plural).
In other contexts of the Bible, this same word is used to indicate “judges” “spirits” “gods” “divine beings” “angels” or the like. The sense of judgement is immediately to be seen in chapter one of Genesis, as God creates something and then “judges” it to be good. when you combine the power to create with the power to judge it can only be referring to God.
It is not even necessary for the human author to understand the depth of the theology involved. The purpose of the Biblical account is to teach and to explain. In the historical context of its writing (and all the stages of later modification) it is teaching about God and the origins of everything.
Genesis 1 is even polemical, as it overturns the pagan beliefs that what are in fact created beings or objects are just that, and not gods to be worshiped – the sun, the moon, stars, water, trees, animals, even humans.
The failure and/or inability of history or science or linguistics to prove this is the failure of those disciplines, not of religion.
What gets lost in the translation, as well (according to the Jewish commentary that I have read), is that those verses are composed of seven Hebrew words or a multiple of seven Hebrew words. The relevance is the emphasis not on a magic number seven, but the fact that God makes a day of holy rest, the seventh day, as reckoned in the account.
The wording that man and woman were made in the image and likeness of God is immensely rich in theological terms. The thing that God loves most (according to Fr. Meconi) is His own image. So, the greatest honor that He bestows on His human creations is to make them in His own beloved image.
We didn’t find Genesis 1 in a fortune cookie.