Genesis 8:6 Meaning

4And the ark rested in the seventh month, on the seventeenth day of the month, upon the mountains of Ararat.

5And the waters decreased continually until the tenth month: in the tenth month, on the first day of the month, were the tops of the mountains seen.

6And it came to pass at the end of forty days, that Noah opened the window of the ark which he had made:

7And he sent forth a raven, which went forth to and fro, until the waters were dried up from off the earth.

8Also he sent forth a dove from him, to see if the waters were abated from off the face of the ground;