see the light

verb3

1. •
   To undergo a spiritual conversion.

   • Once I was lost in darkness, but now I have seen the light.
2. •
   To gain an understanding of something previously not understood, especially in a sudden insight.

   • Finally, near the end of the meeting, John saw the light and withdrew his objections.
3. •
   To come into the world or to public notice.

   • Never had his book seen the light …until now.