When Jesus walked on the Earth, through His apostles He instituted His one, holy, catholic and apostolic Church as His Body: His Bride. Through His sacraments, He and His Bride become one flesh. In spite of Satan’s best efforts to slow down the filling of Jesus’ Church, that one and only Church of Jesus’ is still living and active today!! At Pentecost Jesus deposited His Spirit into His Bride, and over time His Spirit has helped Her write down His word and compile those writings into what is now the 73 book Holy Catholic Bible (the book I read cover to cover when I was 12 -He saved my life, then in 2008 He miraculously healed me -He is still living and active!!!!).
To understand the intended meaning of both the human author (referred to as the literal meaning), as well as the revealed meaning of the divine author (referred to as the spiritual meaning), this is how we study the gift of His Sacred Scripture:
1. Studying Scripture is a study of His word, living an active because He is living and active. Therefore, in order to connect to the revealed meaning we must be actively praying in the same Spirit by whom and through whom His Sacred Scripture was written and compiled.
2. The content and unity of the whole of Scripture must be attended. That is usually accomplished through the application of typology. This reference focuses on the typology and verses that related to His seven sacraments (355 pages!). “Fulfilled in Christ: The Sacraments” (2015) Fr. Devin Roza. Steubenville OH: Emmaus Academic.
Here is the link: http://www.emmausroad.org/Search.aspx?k=fulfilled+in+Christ
3. Refer to the teachings of the Church fathers, leaders, mystics and saints.
4. Make sure whatever you come up with jives with the truths of His faith. His Truth is revealed to us one step at a time through salvation history. His Truth never changes, but we grow in our understanding of what He means, and how to apply it to the present cultures, without His Truth jumping tracks and taking on a new form, or dying and coming back as a different entity. Here is the link to the Nicene Creed, a very basic summary of the faith He gives to us: http://www.usccb.org/beliefs-and-teachings/what-we-believe/
The Church writing, Dei Verbum, is still referenced for the study of Sacred Scripture, and can be found here: http://www.vatican.va/archive/hist_councils/ii_vatican_council/documents/vat-ii_const_19651118_dei-verbum_en.html
This writing tells more how to apply it: http://w2.vatican.va/content/benedict-xvi/en/apost_exhortations/documents/hf_ben-xvi_exh_20100930_verbum-domini.html
I pray that Jesus blesses your studies and grows His Kingdom!