I’m not sure what you mean. They are made known in Genesis and referred to later in the Bible, which is one of many sacred writings inspired by the Holy Spirit as part of the tradition and community that is the Catholic Church.
They are the first human beings existing in time, also represented in the psychological archetypal symbols of an innocent humanity, the wholeness of opposites united in love, and of our fallen nature, virtues corrupted by sin to become vices, among others.
They are the first of a new creation that is mankind, having known God and having refused to be His children, now struggling to return to the destiny for which we were made, to be in eternal communion within the Trinity.