The book begins by noting that God calls Moses to speak with Him in the tent of meeting. This scene still takes place at the foot of Mount Sinai, where the Sanctuary has just been carefully built and filled with divine glory (Ex 40:34-38). To fully understand the book, we need to imagine ourselves during the exile, around the second half of the 6th century B.C., within the purpose of the priestly tradition (P): rebuilding Israel physically, morally, and spiritually. The main idea in the book is that Israel was taken captive as punishment for its unfaithfulness to God, who is holy and faithful. However, God will welcome them back and forgive them. Israel is called to respond by being as faithful as possible, which can only be achieved through perfect worship. In this context, it becomes clearer why there is such strict regulation of sacrifices and all related worship practices. We should remember that many, if not all, of these rules were made during the exile, when there was no Temple or formal worship; thus, they represent ideals meant to be fully realized. Unfortunately, this caused severe hardship for the people, to the extent that Jesus himself called them the most significant barrier to experiencing the Father’s loving mercy.