St. Gregory of Nyssa: "Which faith we guard as we received it, word for word, in purity..."

Christ Pantocrator (source)

  
” …and that we might receive the teaching concerning the transcendent nature of the Deity which is given to us, as it were, ‘through a glass darkly’ from the older Scriptures,—from the Law, and the Prophets, and the Sapiential Books, as an evidence of the truth fully revealed to us, reverently accepting the meaning of the things which have been spoken, so as to accord in the faith set forth by the Lord of the whole Scripture, which faith we guard as we received it, word for word, in purity, without falsification, judging even a slight divergence from the words delivered to us an extreme blasphemy and impiety.”
— St. Gregory of Nyssa, Against Eunomius
  
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Through the prayers of our Holy Fathers, Lord Jesus Christ our God, have mercy on us and save us! Amen!