Glazov demonstrates that the interlinked themes of bridling the tongue and opening the mouth, well-known components of wisdom teaching, are also crucial to understanding much in the prophets, as well as later Jewish and Christian writings, especially liturgical texts. His comprehensive survey and analysis of the theme contribute to both a literary and a historical perspective on the prophetic literature of the Bible.
“One class may be constituted by the initial silences of not knowing what to say or of fearing to speak, which are all types of silence that proceed from a sense of inadequacy, as in the calls or commissions of Moses or Jeremiah or Isaiah, and are relatively passive. A more active type of silence is one, for example, which signifies opposition to the commission itself, as in the call of Ezekiel (Ezek. 2:8–3:15).” (Pages 21–22)