This is Harvey’s free rendering of the passage, which is in the Greek (as preserved in the Catena of John of Damascus): καὶ διὰ τοῦτο ἠνέσχετο ὁ Θεὸς τὴν εἰς τὴν γῆν ἡμῶν ἀνάλυσιν. In the Latin: Propter hoc passus est Deus fieri in nobis resolutionem. See Book iii. cap. xx. 2.