David Brainerd, the great missionary to the American Indians, was on one occasion witnessing to a chief, who was very close to deciding for Christ. But he held back; there was some pause or hesitation. Brainerd got up, took a stick, drew a circle in the soft earth about the chief, and said, "Decide before you cross that line." Why this passion and urgency? Because Brainerd recognized that at that moment, that chief was close to God. If he missed that moment, he might never be so close again.