Psalm 89:29 in the World English Bible
I will also make his offspring endure forever, and his throne as the days of heaven.
Context
28 My mercy will I keep for him for evermore, and my covenant shall stand fast with him.
29 His seed also will I make to endure for ever, and his throne as the days of heaven.
30 If his children forsake my law, and walk not in my judgments;