All the pleasures of heaven are united to forms of service and dwell within them, because forms of service are the good effects of the love and thoughtfulness that angels are immersed in. Consequently, the nature of each individual’s pleasures depends on the nature of that individual’s service, and its intensity depends on the intensity of the affection for service.
We can be assured that heaven’s pleasures are pleasures of service by comparing them with our own five physical senses. Each sense has its own pleasure in accord with the service it performs. Sight has its pleasure, hearing its own, smell its own, taste its own, and touch its own. The pleasure of sight derives from beauty and forms, that of hearing from harmonies, of smell from fragrances, of taste from flavors. Anyone who reflects knows what services the individual senses perform, and people familiar with correspondences know this even more fully. The reason sight has the kind of pleasure it does lies in the service it performs for our discernment, which is an inner sight. The reason hearing has the kind of pleasure it does lies in the service it performs for our discernment and our volition by its attentiveness. The reason smell has the kind of pleasure it does lies in the service it performs for the brain and for the lungs. The reason taste has the kind of pleasure it does lies in the service it performs for the stomach and indirectly for the whole body by nourishing it. Marital pleasure, which is a purer and more delicate pleasure of touch, surpasses all others because of its service, the procreation of the human race and thus of the angelic heaven.
These pleasures are inherent in the senses because of the inflow of heaven, where all pleasure belongs to service and depends on service.
from Heaven and Hell, Section 402