Polycarp to the Philippians 4

1Brothers, I write these things to you concerning righteousness, not because I laid this charge upon myself, but because you invited me. For neither I nor anyone else like me is able to follow the wisdom of the blessed and glorious Paul, who, when he came among you, carefully and surely taught face to face with the men of that day the word concerning truth; and who also, when he was absent, wrote a letter to you. If you look diligently into it, you will be able to be built up unto the faith given to you, which is the mother of us all, while hope follows after and love goes before—love toward God and Christ and toward our neighbor. For if anyone is occupied with these, that person has fulfilled the commandment of righteousness; for whoever has love is far from all sin.