Matthew 1:20

Tαῦτα δὲ αὐτοῦ ἐνθυμηθέντος ἰδοὺ ἄγγελος Kυρίου κατ’ ὄναρ ἐφάνη αὐτῷ λέγων· Ἰωσὴφ υἱὸς Δαυὶδ, μὴ φοβηθῇς παραλαβεῖν Μαρίαμ τὴν γυναῖκα σου· τὸ γὰρ ἐν αὐτῇ γεννηθὲν ἐκ πνεύματος ἐστιν ἁγίου.

But while he thought about these things, behold, an angel of the LORD appeared to him in a dream, saying, Ioseph son of David, do not be afraid to take Mariam as your wife, for that which is conceived in her is of the Holy Spirit.