And he stayed yet other seven days; and sent forth the dove; which returned not again unto him any more.
He ... sent forth the dove; which returned not ... any more. In these results we perceive a wisdom and a prudence far superior to the inspiration of instinct-we discern the agency of God guiding all the movements of this bird for the instruction of Noah, and reviving the hopes of his household.
Other seven days - a strong presumptive proof that Noah observed the Sabbath during his residence in the ark.