3 Nephi 1 :12-22
And it came to pass that he cried mightily unto the Lord all that day; and behold, the voice of the Lord came unto him, saying:
13 Lift up your head and be of good cheer; for behold, the time is at hand, and on this night shall the sign be given, and on the morrow come I into the world, to show unto the world that I will fulfil all that which I have caused to be spoken by the mouth of my holy prophets.
14 Behold, I come unto my own, to fulfil all things which I have made known unto the children of men from the foundation of the world, and to do the will, both of the Father and of the Son—of the Father because of me, and of the Son because of my flesh. And behold, the time is at hand, and this night shall the sign be given.
15 And it came to pass that the words which came unto Nephi were fulfilled, according as they had been spoken; for behold, at the going down of the sun there was no darkness; and the people began to be astonished because there was no darkness when the night came.
16 And there were many, who had not believed the words of the prophets, who fell to the earth and became as if they were dead, for they knew that the great plan of destruction which they had laid for those who believed in the words of the prophets had been frustrated; for the sign which had been given was already at hand.
17 And they began to know that the Son of God must shortly appear; yea, in fine, all the people upon the face of the whole earth from the west to the east, both in the land north and in the land south, were so exceedingly astonished that they fell to the earth.
18 For they knew that the prophets had testified of these things for many years, and that the sign which had been given was already at hand; and they began to fear because of their iniquity and their unbelief.
19 And it came to pass that there was no darkness in all that night, but it was as light as though it was mid-day. And it came to pass that the sun did rise in the morning again, according to its proper order; and they knew that it was the day that the Lord should be born, because of the sign which had been given.
20 And it had come to pass, yea, all things, every whit, according to the words of the prophets.
21 And it came to pass also that a new star did appear, according to the word.
“At this beautiful and glorious season we celebrate the birth of the Holy one of Israel – the Lord Jesus Christ. His birth, heralded by angels, had been revealed to Prophets in ages past. Perhaps the most meaningful of those prophetic declarations concerning the Savior’s pending birth came from the Lord Himself when He told the Prophet Nephi: ‘Lift up your head and be of good cheer; for behold, the time is at hand, and on this night shall the sign be given, and on the morrow come I into the world….’ (3 Ne. 1:13.)
“Almost twenty centuries have come and gone since the Savior’s birth and today, as then, He encourages all people to ‘be of good cheer.’ (D&C 78:18.) We echo the words of the Lord and testify of His divinity and that He is the author of our eternal salvation. This is the message of joy ‘that shall be to all people.’ (Luke 2:10.) May we find such joy as we abide by His teachings and serve with love our fellow beings. ” (First Presidency Christmas Message, Church News, 12/14/96)