Commentaries:
Barnes' Notes
This people have I formed for myself - To preserve the remembrance of my name; to transmit the knowledge of the true God to future times, and to celebrate my praise (see the notes at Isaiah 43:1).
They shall show forth my praise - They shall celebrate my goodness; or, by their restoration to their own land, they shall show manifestly that they are my people.
Other Barnes' Notes entries containing Isaiah 43:21:
Malachi 2:10
Romans 8:19
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