Considering God's present providence in causing it to fall in double proportion, and remembering that the next day was the sabbath day, which God had blessed and sanctified to his own immediate service, Genesis 2:3, and therefore was not to be employed in servile works, such as the gathering of manna was, they rightly concluded that God's commands, delivered Exodus 16:16,19, reached only to ordinary days, and must in all reason give place to the more ancient and necessary law of the sabbath. Either to acquaint him with this increase of the miracle, or to take his direction for their practice, because they found two commands seemingly clashing together, and therefore needed and desired his advice.
Related Commentaries of Exodus 16:22
Exodus 16:22
22 And it came to pass, that on the sixth day they gathered twice as much bread, two omers for one man: and all the rulers of the congregation came and told Moses.