Parallel
Matthew 23:22
Nestle 1904 Greek New Testament · Berean Standard Bible
καὶ ὁ ὀμόσας ἐν τῷ οὐρανῷ ὀμνύει ἐν τῷ θρόνῳ τοῦ Θεοῦ καὶ ἐν τῷ καθημένῳ ἐπάνω αὐτοῦ
And he who swears by heaven swears by God’s throne and by the One who sits on it.