Several years ago automobile makers started installing cruise control in their cars and trucks. As you know Cruise control allows you to push a button and not have to worry about trying to maintain a certain speed. It does this by accelerating when going up a hill, and decelerating when you go down a hill.
Hershall Hobbs says, that we as Christians can move along at a steady pace along the highways of life regardless of whether the road is flat or whether it goes through the mountains. He says when the going gets tough, that those of us who are Christians have the strength for every bump in the road we experience because the Holy Spirit lives within us.