the church father's writings are not inspired, they were written by fallible, yet holy men
for the early church, it is important to sift out what exactly the early church, the church that knew the apostles, believed and understood about scripture
everything else is the development of our understanding of christian thought and philosophy. we are not mohameddans where we just go "all we need is the quran", for the sacred scripture (the bible) itself proclaims we should lean on the apostles and the church for true understanding