One of my favorite images for the Christian life is a bicycle. A bicycle must have two functioning tires to move forward. The front tire is grace. Grace always leads. The back tire is demand. Demand always follows grace (Exod. 20:1–3). But both are needed for the Christian life to move forward (see chapter 3). To extend the analogy, belief and repentance are like pedals for this bicycle. You must keep pressing on both. Yes, occasionally the road will head downhill and you can coast, but if you ignore either tire or attempt to push only one of your pedals, you’ll get in a ditch. Attend to both
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