The Gospel of John, Day 3: ch. 1, vv. 9-13

9 The true light that gives light to everyone was coming into the world. 10 He was in the world, and though the world was made through him, the world did not recognize him. 11 He came to that which was his own, but his own did not receive him.

Jesus gives light to all of us.  Everyone.  However, those in darkness the light, they do not receive it.  As the darkness can not overcome or understand the light, those in darkness didn't receive or recognize Christ.  Darkness blinds our eyes from seeing the light.

12 Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God— 13 children born not of natural descent, nor of human decision or a husband’s will, but born of God.

If we receive Jesus as he is, that is we believe in Him, we are born again as a child of God.  This is totally different that natural birth, it is only something that can be wrought by God.