Numbers 15:32
While the people of Israel were in the wilderness, they found a man gathering sticks on the Sabbath day.
Exodus 35:2-3
Six days work shall be done, but on the seventh day you shall have a Sabbath of solemn rest, holy to the LORD. Whoever does any work on it shall be put to death.
Exodus 16:23
he said to them, "This is what the LORD has commanded: 'Tomorrow is a day of solemn rest, a holy Sabbath to the LORD; bake what you will bake and boil what you will boil, and all that is left over lay aside to be kept till the morning.'"
Exodus 16:27-28
On the seventh day some of the people went out to gather, but they found none.
Exodus 20:8-10
"Remember the Sabbath day, to keep it holy.
Exodus 31:14-15
You shall keep the Sabbath, because it is holy for you. Everyone who profanes it shall be put to death. Whoever does any work on it, that soul shall be cut off from among his people.