In the Gospel of John, Jesus sums up pretty much everything by saying, "These things I have spoken to you, that my joy may be in you, and that your joy may be full" (John 15:11). He said it at the supper that he knew was the last one at which he'd have a mouth to eat with.
Happiness turns up more or less where you'd expect it to-a good marriage, a rewarding job, a pleasant vacation. Joy, on the other hand, is as notoriously unpredictable as the one who bequeaths it.
~originally published in Wishful Thinking and later in Beyond Words