Someone - Mother Angelica? - used the image of a vessel like a cup or jar. In Heaven, every vessel will be completely full of the love of God. However, some vessels can hold more than others.
Speaking of Mother, did you happen to see yesterday’s Journey Home? If not, the man who was guest was very interesting and his experience to happen upon the Shrine while he was waiting for a way to get home and he had been struggling about converting. God’ hand was surely working with his conversion.