FK: But that moral is determined by men, NOT by God. Therefore, the hope that you have must be in those men that you follow, that they were true believers and knew what they were talking about.
Provided the authors of the Bible wrote what they wanted, yes. But we believe that God revealed Himself to them and they, as best as they could, interpreted them within the context of their time and personal disposition. So, yes, they all contain some kernels of truth, whether they be moral truths, facts, or elements necessary for context.
The Bible contains "some kernels of truth"? Do Patristic writings also contain some kernels, or is there more truth in them?
If I had to summarize Christian morality, I would say it is based on love and mercy.
Would it be moral in a Christian sense for a country to defend itself if attacked? That would involve neither love nor mercy (if done right).
Yes, obviously many things in the Bible are not true. If the Bible perfect? It contains eternal truths, but it doesn't mean everything in it is eternal truth.
Some Patristic writings are obviously not correct. St. Gregory of Nyssa taught universal salvation while he was under Origen's influence. Blessed Augustine wrote His famous Retractions before he died.
Majority of Patristic writings deal with eternal truths that trascend age and geography and in that sense they only reflect the truths of the Bible.
Would it be moral in a Christian sense for a country to defend itself if attacked? That would involve neither love nor mercy (if done right).
According to the earliest Church, no. Under no circumstances was a Christian to bear arms. Those who served in the Roman army were told to leave the army.