The depth of our spiritual maturity is measured by our response to uncertainty. Most people can determine their path when the way is clearly marked and easy to follow. Decisions are made, and they forge ahead. Ambiguity and uncertainty, however, present more difficult challenges. The less clear the path the less certain is how to safely proceed. Moving forward requires a more educated response to reach the desired objective. The measure of a man or woman is to utilize appropriate supplements when making difficult choices and reinforcing the courage to continue the journey. Navigating grey areas, where clear paths are hard to come by, is how we are tested. Cloudy moments reveal our inner resolve, holding an unflinching mirror to our naked response to the unknown. Marlow has researched to identify ways to remain on the covenant path through mists of darkness in search of the waiting tree of life. In providing a variety of what he refers to as "seatbelts and vitamins" he reminds us that facing the unknown-the undiscovered country-can be unsettling. Pushing out from our quiet harbor, we soon find storms waiting beyond the sea wall. It is not a journey for the faint of heart.Marlow explains that a loving God long planned for us to successfully weather those storms. Spiritual vitamins have been prepared to help reinforce our battered immune systems. For this reason, Marlow has depicted how those vitamins increase our faith and steel our resolve. He reminds us that God intends us to grow through the experiences of life. So, sit back and enjoy this ride. The author has prepared a wonderful buffet of scriptural wisdom, hard-fought personal experiences, and heroes galore. The result is reassuring strength for the days to come.