V'Shamru  

Ve-shamru v'nei Yisroel et ha-Shabbat, la'asot et ha-Shabbat le-doro'tam brit olam. Bei-ni u-vein b'nei Yisroel ot hi le-olam, ki shei-shet ya-mim ah-sah A-do-nai, et ha-sha-mayim ve-et ha-aretz uva-yom ha-shevi'i shavat va-yi-nafash.

And the Children of Israel observed the Sabbath,
to make the Sabbath for their generations an eternal covenant.
Between Me and the Children of Israel it is a sign forever,
that in six days did HASHEM make the heaven and the earth,
and on the seventh day He rested and was refreshed.'