The text is translated from the Septuagint, in which S. Cyril found the title Almighty (Παντοκράτωρ), one of the usual equivalents in the Septuagint for Lord of Hosts (Sabaoth).  In the English A.V. and R.V. the passage stands thus:  Jer. xxxii. 18, 19:  The Great, the Mighty God, the LORD of Hosts, is His name, Great in counsel, and mighty in work.