אֶפְעֶה I have changed this Hebrew word to reptile in the translation. Previously it was translated as Viper but Viper is already related to another Hebrew words which seems to fit the meaning of viper more closely. Also in Isaiah 59:5 Viper seems to be a subset of this word. As serpent (snake) is already clearly defined as another Hebrew word the best fit I can find for this Hebrew word is reptile which seems to fit the text. In spite of any lingering doubt about the exact meaning of this word, the increased consistency of use will aid the reader and is a large improvement on the jumbled words of the original King James.