I will love him, as if now He did not love him. What meaneth this? He explains it in what follows: And will manifest Myself unto him, i. e. I love him so far as to manifest Myself to him; so that, as the reward of his faith, he will have sight. Now He only loves us so that we believe; then He will love us so that we see. And whereas we love now by believing that which we shall see, then we shall love by seeing that which we have believed.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tract. lxxv. 5