How can we actually see and know God for sure?

We have to break these three dimensions, because man is a three-dimensional being. If you go past these dimensions, then you can see. That is why the scriptures talk about being above, overcoming the sensory organs, mind and intellect. If you pass beyond them, if you overcome them, you can see God as God is. Otherwise, you’ll be perceiving God either with your intellect or with your mind, and trying to make God something which God is not. That is why the scriptures say that people have to go beyond mind and intellect, they have to transcend all the working organs and sensory organs (karmindriya and gyanindirya). Cross over them, jump over them and then experience God as God is. Otherwise, the experience of God will not be pure, it will be diluted. www.manavdharam.org