Matthew 1:20
And as he was revolving the matter in his mind, behold, an angel of the Lord in a dream appeared unto him, saying, Joseph, son of David, fear not to take Mary for thy wife, for that which is conceived in her is from the Holy Spirit.
Matthew 2:13
Now when they were gone, behold an angel of the Lord appeared unto Joseph in a dream, saying, Arise, and take the infant and his mother by night, and flee into Egypt, and stay there, till I speak to thee, for Herod will search for the infant to destroy it.
Acts 18:9-10
Then spake the Lord in a vision by night to Paul, Fear not, but speak; and hold not thy peace:
Acts 27:23
For there stood by me this night an angel of God, whose I am, and whom I serve,