We All Will Die, But We Must Be Grateful
Sukkot is known in Rabbinic tradition as the "Festival of Our Joy" (Z'man Simchateinu, a name that derives from Leviticus 23:40: "You shall rejoice before the Eternal your God seven days"). Sukkot is the only festival for which the command to rejoice is given. It is a commandment — a mitzvah: us'mach'tem — "be happy!"