When you experience it, it will defy all the knowledge of it you gain from study because it will become clear that no matter how much you understand it with your mind, there is no way to fathom the intensity of his love. I had an amazing experience of his love and I cannot even begin to explain how overwhelming it is, knowing that I experienced only a tiny fraction of the magnitude of love that compelled Jesus to the cross. It was so much that I could not bear it! And this is fear of the Lord - it is not the fear of terror, but the "fear" of awe. When you experience his love, you can't help but be in awe...
When I had this experience, I then knew in my mind, and remembering it has compelled me to love where I could not otherwise, even knowing how terribly imperfect my own expression of love is. But it is important to study the love Jesus showed as well, so we know how others can experience his love through us.
Do you have a plan - a systematic method for studying his love as shown in the Bible?