Psalms 89:29
“His seed also will I make to endure for ever, and his throne as the days of heaven.”
Also I will make him my firstborn, higher than the kings of the earth.
My mercy will I keep for him for evermore, and my covenant shall stand fast with him.
His seed also will I make to endure for ever, and his throne as the days of heaven.
If his children forsake my law, and walk not in my judgments;
If they break my statutes, and keep not my commandments;
Why This Verse Was Tagged
This verse was identified through meaning similarity — its content is mathematically close to known verses in this theme, even without sharing the same vocabulary.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Thy seed will I establish for ever, and build up thy throne to all generations. Selah.”
“He asked life of thee, and thou gavest it him, even length of days for ever and ever.”
“That your days may be multiplied, and the days of your children, in the land which the Lord sware unto your fathers to give them, as the days of heaven upon the earth.”
“His seed shall endure for ever, and his throne as the sun before me.”
“Their blood shall therefore return upon the head of Joab, and upon the head of his seed for ever: but upon David, and upon his seed, and upon his house, and upon his throne, shall there be peace for ever from the Lord.”