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 it shall be to you a holy day, a sabbath of rest to the LORD: whosoever does work on it shall be put to death.
Exodus 16:23
And he said unto them, This is that which the LORD has said, Tomorrow is the rest of the holy sabbath unto the LORD: bake that which you will bake today, and boil that which you will boil; and that which remains over lay up for you to be kept until the morning.
Exodus 16:27-28
And it came to pass, that there went out some of the people 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
You shall keep the sabbath therefore; for it is holy unto you: every one that defiles it shall surely be put to death: for whosoever does any work on it, that soul shall be cut off from among his people.