Matthew 1:20
But while he was thinking about the matter, [suddenly] an angel from the Lord appeared to him in a dream [i.e., a supernatural revelation given during sleep], saying, "Joseph, you descendant of David, do not be afraid to take Mary to be your wife, for the baby she is carrying is by [the power of] the Holy Spirit.
Matthew 2:13
Now when they had gone an angel from the Lord appeared to Joseph in a [supernatural] dream, saying, "Get up and take the young child and His mother and hurry to Egypt. Stay there for as long as I tell you to, for Herod will be looking for the young child in order to kill Him."
Acts 18:9-10
Then the Lord spoke to Paul in a night vision [i.e., a divinely given dream]: "Do not be afraid, but speak up and do not hold [anything] back,
Acts 27:23
For an angel from God, to whom I belong and whom I serve, appeared to me last night,