Moses must learn to trust in God, even when circumstances seem to conflict with what God has promised. Moses does not only pray for himself but also for the people. His fate is intertwined with that of the people. Here he learns to pray as a mediator for the people.
22 Moïse retourna vers l'Eternel, et dit: Seigneur, pourquoi as-tu fait du mal à ce peuple? pourquoi m'as-tu envoyé?