John Chrysostom
The inquiry arises regarding why the sacred text, after stating that "the tops of the mountains appeared" (Gen. 8:5), now indicates that the dove returned to Noah in the ark "for the water was yet upon the surface of all the earth" because it found no resting place. Let us examine these statements closely to uncover the reason. The Scripture specifies that the dove "found no rest," adding "with his feet" to illustrate that, although the waters had receded somewhat and the mountain summits were visible, these very peaks were still tainted by the remnants of the deluge. Consequently, the dove was unable to alight anywhere or find sustenance and decided to return to the ark, conveying to the righteous man that ample water remained on the earth.
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"And he stretched forth his hand, and took it, and received it unto himself into the ark." Observe the gratitude of this bird; by returning to the ark and remaining there, it encouraged the righteous man to endure a little longer.