Today, we consider the 4th commandment. In the NT era, this is one of the most controversial commands. Someone’s approach to the 4th commandment often indicates how he understands the relationship of the OT law to the church.
The rest of Exodus 16 deals with the institution of a pre-Sinai Sabbath and the people’s response to this. I believe that the same theme of first half of the chapter can be easily brought over and extended into the focus on the manna and Sabbath. That is, we still learn here that true saints believe that God alone can satisfy their greatest desires.