Checking spiritual temperature

Russ Rosser of Carmel Baptist Church in Matthews, NC, offers a lesson plan for “Renewing Commitment”. His approach suggests (to me) the idea of illustrating Christian commitment using a thermometer. For example, a "spiritual thermometer" might register at one end whether you are lukewarm, or at the other, if you are serving God in “fiery holiness”? I suppose you could take a thermometer to class and use it in your illustration.

I’ve mentioned the idea of using a thermometer before in posts about sharing Jesus, and getting the class to listen up.