David Waltz has a very good article refuting to revisionist attempts by the likes of James White (The God Who Justifies [2001]) who have abused these two early Christian texts to support the heresy of sola fide. In reality, such a theology is alien to the texts. One can read the article at:
Development, Justification/Soteriology and the Early Church Fathers
Development, Justification/Soteriology and the Early Church Fathers