Exodus 16:27

And it came to pass, that there went out some of the people on the seventh day for to gather, and they found none.

Cross-reference

Exodus 20:10, the Ten Commandments, reiterates the same Sabbath prohibition — no work on the seventh day — reinforcing this law.

Numbers 15:32 records another Sabbath violation in the wilderness — a man gathering sticks — showing the same disobedience and its severe consequence.

Ezekiel 20:13 recalls that Israel profaned God’s Sabbaths in the wilderness, directly echoing the rebellion seen here when they went out to gather.