And Hashem said to Moshe: The man shall surely be put to death; the whole congregation shall stone him with stones outside the camp.
Torah Temimah: the divine answer fixes sekilah (stoning) as the death for this Shabbos violation.
English: The man shall surely be put to death; the whole congregation shall stone him with stones outside the camp.
Specification of the death penalty form.
Once specified, sekilah becomes the classic penalty for public Shabbos desecration of this type.