Genesis 15:5 and Genesis 22:17
(This is also great for the story of Creation- Day 4)
I found this really cool glow in the dark sand at the pet store. (Make sure it has the glow in the dark sticker or says "Glow in the Dark" on the package.) I let the children put tiny drops of white glue all over a piece of black construction paper to be the stars. I put this sand into a salt shaker and let the kids shake the sand onto the glue spots like they would apply glitter. They lift the paper to let the excess slide off. They have a paper of many, many, many stars which actually glow in the dark. We turn off the lights and see the stars.