What Does Exodus 16:23 Mean?

On the seventh day some of the people went out to gather, but they found none. And the LORD said to Moses, "How long will you refuse to keep my commandments and my laws?" The Sabbath-gathering violation is the second manna-instruction failure: some Israelites go out to gather despite Moses' explicit instruction that no manna will fall. They find nothing: the Sabbath absence is absolute, not a reduced or delayed provision. YHWH's Sabbath-rest from manna is not negotiable; you cannot gather what YHWH has not provided. Effort does not create provision when YHWH is resting from provision.

"How long will you refuse to keep my commandments and my laws?": the divine frustration is the "how long?" question expressing exhausted patience. YHWH has provided the double portion, preserved it overnight, explicitly instructed Moses, Moses has explicitly relayed the instruction, and some people still went out to gather. The question anticipates the Sinai covenant's necessary formal institution of the Sabbath law: the community that violated oral instruction through Moses will need the written commandment on tablets to take the Sabbath obligation seriously.

"My commandments and my laws" applied to the manna instructions is the first legal-vocabulary occurrence in the wilderness period: the manna provision comes with covenant obligations. The wilderness is not a pre-law grace period; YHWH attaches specific behavioral requirements to his provision from the first week. The Sabbath embedded in the manna provision is the earliest covenant law: before Sinai, before the tablets, the Sabbath is already a commandment that Israel is already violating. Sinai formalizes what the manna has been establishing since the Wilderness of Sin.