Gophack, I was raised in the Reformed tradition of John Calvin. I think John Calvin was a sincere and devout Christian. However, I would not consider his writings sacred. I think we need to consider what we call divine and sacred in both an implicit and explicit sense. The creation was established by the Word of God and if we take that into serious contemplation we should be very careful about what we consider divine or sacred, or what is the Word of God. I have no doubt that you can gain additional understanding through the writings of the early Church fathers yet you should not rely on them exclusively.
The grace of the Lord be with you.
Perhaps I wasn't clear in my post. I in no way rely on the writings of the early Church fathers exclusively; in fact, Scripture is the foundation for the Catholic faith. However, the writings of the early fathers help greatly in understanding the context of the Scriptures, particularly the historical context and the comparisons between OT and NT. Also, the writings should the implementation of the Word of God and the early evangelization of Christians.
God bless.