The Lord hath done it. — The pronoun supplied in the Authorised Version refers to the redemption of Isaiah 44:22; but the word may be taken absolutely in the sense hath done mightily.
Ye lower parts of the earth. — These, as in Ephesians 4:9, are equivalent to Sheol, or Hades. Even they, commonly thought of as echoing no song of praise (Psalms 6:5; Psalms 88:12; Isaiah 38:18), are invited to join in the great doxology.