This was a new word for me! One I learned last week. It seems to have been going on in Roman Catholic Orders for centuries, although in modern times it has been weakened by tepidity itself and is now labelled the "mid-life crisis" that priests and nuns can often experience! A good dose of aromatherapy can help, it seems.
However, in the past this state was taken very seriously. We come to ordination or to final vows with such a great enthusiasm, and as the years roll by this can wane and our commitment to Our Lord or even our work can become lukewarm.
And as I sat this afternoon thinking about this, and thinking of our Diocesan Ministry Officer on a train to Gothenberg today, I found great comfort in the fact that tepidity is no longer allowed in Glasgow and Galloway!