Parallel
Romans 9:16
Nestle 1904 Greek New Testament · Berean Standard Bible
Ἄρα οὖν οὐ τοῦ θέλοντος οὐδὲ τοῦ τρέχοντος ἀλλὰ τοῦ ἐλεῶντος Θεοῦ
So then, it does not depend on man’s desire or effort, but on God’s mercy.