As far as adult patterns, the stress may be laid on two different aspects, even if they are, most of the time, linked. Some are actively and personally present in us as was the case with the school teacher who changed radically albert camus’ destiny (and in that very case, what was at stake was how to know how to keep one’s place). But they are also patterns which, without directly interfering with our lives, become such by precisely knowing how they should keep their place. In order to illustrate those aspects of things, we chose two episodes in moses’ life : the former when he is given his adult place from jethro, his father-in-law and the latter when he himself becomes the « relation pattern » for his own people in the course of the crossing the desert, by submitting himself to the law of exchange.