Numbers 15:32
And while the children of Israel were in the wilderness, they found a man that gathered sticks upon the sabbath-day.
Exodus 35:2-3
Six days shall work be done; but on the seventh day there shall be to you a holy day, a sabbath of rest to the LORD: whoever doth work therein shall be put to death.
Exodus 16:23
And he said to them, This is that which the LORD hath said, To-morrow is the rest of the holy sabbath to the LORD: bake that which ye will bake to-day, and boil that ye will boil; and that which remaineth over, lay up for you to be kept until the morning.
Exodus 16:27-28
And it came to pass, that some of the people went out on the seventh day to gather, and they found none.
Exodus 20:8-10
Remember the sabbath-day to keep it holy.
Exodus 31:14-15
Ye shall keep the sabbath therefore: for it is holy to you. Every one that profaneth it shall surely be put to death: for whoever doeth any work therein, that soul shall be cut off from among his people.