Unless you are like a Child it is hard to know the ways of heaven....
Yet on dying to self, which hate requires you to do, as you need to be ("I am") to hate anyone.

When you will return to the same as once you came, then in remembering that; it is the secret to happiness in knowing the infinite.

As when you were young you knew pure love, then you get older attach to material ideas, and then when old enough let go again and so return to happiness of One love!