The view of heaven provided by this brief description enables us to see that what makes heaven in us is the desire that comes from a love for what is good. But who knows this nowadays? Who actually realizes what “a desire that comes from a love for what is good” is, or realizes that the desires come from a love for what is good are beyond number, infinite? For as already noted [Section 61], every angel is quite clearly her or his desire, and heaven in form is the form of all the desires of divine love there.
No one can unite all these desires into this form except the One who is both love itself and wisdom itself and is at the same time infinite and eternal, since there is something infinite and eternal in every form–something infinite in its union and something eternal in its perpetuity. If that infinite and eternal element were taken away, there would be an instantaneous collapse.
Who else can unite desires into a form? Really, who else can unite one part of it? No part of it can be united except on the basis of an all-embracing concept of all the parts, and the all-embracing whole depends on a concept of each particular component of it. There are millions of components of [heaven’s] form, there are thousands entering every year, and there will be thousands entering forever. All little children go there, as do all the adults who are desires that come from a love for what is good.
This again shows that there is an image of what is infinite and eternal in the angelic heaven.
from Divine Providence, Section 63
Secrets of Heaven 