The Unalloyed Joy of Grandparenting

There are virtually no references to grandparenting in the Torah, until, by sharp contrast, we are told in Genesis 50:23 that Joseph got not only to grandparent but great-grandparent as well.  I reflect upon this startling exception using two articles from the New York Times, including a recent one that describes the recent increase of adult children in their 20's becoming roommates with their grandparents.