What is light?

Here is what I got.
I was shown my cupped hands, and my spirit-self pouring its energy down into them and from them into my body. I meditate near a rippling stream, so the sound effects assisted this vision beautifully. I directed the flow to my third eye, then to my throat and heart and on down. And then I felt this clear message:
You don’t have to channel it. You ARE it. I am it.
I am spirit. I am Source. I am light.
The song, I Am Light by India Arie came to me and I listened in my mind as clearly as I could have listened on my iPhone. I’m linking below. Go ahead, play it. I’ll wait. It’s a couple minutes of absolute bliss and it’s important to give ourselves those.