The Gemara in Brachot 40a, makes an interesting observation about the difference between Hashem and man.
Regarding one of flesh and blood, he is only able to fill an empty cup. If the cup is full, there is no place to add any further contents.
This is just the opposite when it comes to the ways of Hashem. An empty cup is a reference to one who is empty of knowledge and deeds. He has no interest or ability to fill his cup with holiness and spirituality.
But the one whose cup is full of Torah and Chessed, is a receptacle for more and more of the שפע, or abundance, provided by Hashem.
Our job is to become proper receptacles to receive Hashem’s blessings.