When our children were small, they had a pet hamster named Rowdy. We got him one of those fancy plastic hamster mansions with multiple rooms and tunnels. Among other things, this provided the little critter with any number of suitable places to sleep.
So where did Rowdy usually like to nap? In his exercise wheel.
That little bit of irony got me thinking. The writer of Hebrews said that mature Christians are those “who because of practice have their senses trained [exercised, NKJV] to discern good and evil” (5:14).…