Parallel
Psalms 88:30
Swete's Septuagint · Berean Standard Bible
καὶ θήσομαι εἰς τὸν αἰῶνα τοῦ αἰῶνος τὸ σπέρμα αὐτοῦ, καὶ τὸν θρόνον αὐτοῦ ὡς τὰς ἡμέρας τοῦ οὐρανοῦ.
89:29
I will establish his line forever, his throne as long as the heavens endure.