Morning Star Rises - 2 Peter 1:19

2 Peter 1:19 ESV 

And we have the prophetic word more fully confirmed, to which you will do well to pay attention as to a lamp shining in a dark place, until the day dawns and the morning star rises in your hearts,

1 Peter 2:9 ESV 

But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light.

In the creation account, the day begins with darkness and ends with the light of day. As the song of creation is spoken by our Creator, we see the chorus at the end of each day, "And there was evening and there was morning, the first day" to remind us of what He is doing. He is bringing His light into the world. The world begins in darkness and then is filled with light. 

This is exactly what takes place in the person who is able to receive the light, who is able to perceive the difference between day and night. Then the day dawns and the morning star rises in our hearts.