Matthew 1:23

19 and Joseph her husband being righteous, and not willing to make her an example, did wish privately to send her away.

20 And on his thinking of these things, lo, a messenger of the Lord in a dream appeared to him, saying, `Joseph, son of David, thou mayest not fear to receive Mary thy wife, for that which in her was begotten [is] of the Holy Spirit,

21 and she shall bring forth a son, and thou shalt call his name Jesus, for he shall save his people from their sins.`

22 And all this hath come to pass, that it may be fulfilled that was spoken by the Lord through the prophet, saying,

23 `Lo, the virgin shall conceive, and she shall bring forth a son, and they shall call his name Emmanuel,` which is, being interpreted `With us [he is] God.`

24 And Joseph, having risen from the sleep, did as the messenger of the Lord directed him, and received his wife,

25 and did not know her till she brought forth her son -- the first-born, and he called his name Jesus.