This text examines the fundamental structure of faith, which is more evident in biblical narratives than in theological reflections. The story of Abram from Genesis 12 is presented as a key example, where he is called to leave all that is known and venture into the unknown with God's promise. His obedience, described as "Abram went, just as the LORD had told him," is considered a vivid depiction of acting by faith. A more extreme example is Lot's escape from the destruction of Sodom (Genesis 19). Unlike Abram, Lot hesitates, clings to the past, and fears the unknown future. His family looks back and is punished. The text quotes Isaiah 43:18–19 to emphasize God's call to forget the past and open oneself to the new. Finally, the text defines faith as an "inclination to act," which bases certainty on a future about which one does not form concrete images, and hope as reliance on this unknown but resolving future. In today's world, it is crucial to learn to rely on the future, not to fear it.