MM: It doesn't matter. Don't concern yourself at all about what it might be, or might be like. Just know - deep down, and with your complete trust and all the love in your heart - that you will indeed know it. Accept that this is a 100% reliable source making this promise to you. Then you become ready to receive it. That is all that matters, that you become receptive. Don't concern yourself with this truth in any other way. You will not need your intellect, your understanding, or any past experience to recognize this truth to be The Truth. It will be self evident and beyond doubt. It will not be a thought, an idea, an image, a feeling, or anything else you are used to or could possibly imagine. That all has to get out of the way.
That is what meditation is - just practicing getting all thoughts, ideas, opinions, feelings, images...out of the way, so that the veil can get lifted from your eyes.