The Question of God´s Action in the World as one Fundamental Aspect of Crisis of Faith Christian religion is mainly based on the fact of God´s action in the world, as the Holy Bible expresses and testifies in many different ways throughout the salvation history. But how can we talk about God´s action in the world in a responsible and reasonable way, while we found ourselves in a highly developed environment, were both, technical progress and rationality, determine our daily life? Evidently, more than just a few people consider science and technical progress to be the main reasons why the belief in God´s direct intervention in our world is not expected to happen any more. Therefore, the aim of this article is to point out how God´s action in the world can be made plausible in a reasonable way with regard to recent research results in natural sciences, such as evolutionary biology or cosmology.