Dr. Erwin Lutzer: November 15, 2012

Certain laws are built into the fabric of the universe, such as gravity, the speed of light, and the principles of sowing and reaping. You can’t avoid gravity, and you can’t change the speed of light. Neither can you buck the system that says “you reap what you sow.” God uses this principle to teach His children not to sin. And sometimes, the lessons are hard.