If you were inside the cockpit of a departing airplane, just as it took off from the runway you would hear the copilot or captain call out, "V1." This phrase represents the "point of no return."
As the airplane accelerates toward the end of the runway, the pilot must decide if the plane is moving fast enough for a safe takeoff. This speed must be determined preflight based on several factors, including the air pressure, temperature, speed of the wind, and weight of the aircraft.
The pilot maintains a hold on the throttle as the plane approaches the V1 speed, so that he or she can abort the takeoff if something goes wrong. However, after V1, the plane must take off.
As Christians, we should have a V1 commitment to our walk with Christ. Once we have placed our faith in Christ alone, we have reached the point of no return. We need to adjust our "attitude," apply full throttle, and take off.