"The old seminary professors used to speak about a necessary trait for pastoral ministry called gravitas. It refers to a soul that has developed enough spiritual mass to be attractive, like gravity. It makes the soul appear old, but gravitas has nothing to do with age. It has everything to do with wounds that have healed well, failures that have been redeemed, sins that have been forgiven, and thorns that have settled into the flesh. These severe experiences with life expand the soul until it appears larger than the body that contains it" (Barnes, The Pastor As Minor Poet, p. 49).
I found it here.