The Epistle of Barnabas
Barnabae epistula
Barnabas. The Apostolic Fathers with an English Translation In Two Volumes. Vol. I. Lake, Kirsopp, editor. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd. 1912.
οὐχ ὑψώσεις σεαυτόν, ἔσῃ δὲ ταπεινόφρων κατὰ πάντα· οὐκ ἀρεῖς ἐπὶ σεαυτὸν δόξαν. οὐ λήμψῃ βουλὴν πονηρὰν κατὰ τοῦ πλησίον σου, οὐ δώσεις τῇ ψυχῇ σου θράσος.