We all deserve a second chance and no one knows that more than HaShem, who built 2nd chances (teshuvah) into the very fabric of creation.
The miracle of manna, which began to appear on the desert floor on the 16th of Iyar teaches us the responsibility for earning a living and the purpose of our labors, a lesson Rabbi Shimon bar Yochai needed to be reminded of when he emerged from a cave thirteen years after entering.