"When you have laid aside mortality and been clothed in immortality, then you will see God according to your merits. God raises up your flesh to immortality along with  your soul, and then, once made immortal, you will see the immortal One, if you believe in him now." (St Theophilus of Antioch)

Now, we see God in faith. But when we die, we will see him as he is, in all his glory. If we die in him, seeing him will be the fulfillment of our existence. This was why we were created: to see him, to share in his glory eternally. On the other hand, if we die alienated from him because of  willful, personal sin, we will not be to bear seeing him. Like Adam and Eve, after they sinned, we will want to hide from him, not bearing to see his love and glory, and knowing that we are unfulfilled. The eyes of faith allows us to see him. Without faith, the brightness of his glory blinds us. God desires us to see him. It is our choices that will determine whether we will or not.