We have here an account of the spies which Noah sent forth to bring him intelligence from abroad, a raven and a dove. Observe here,
I. That though God had told Noah particularly when the flood would come, even to a day (Gen 7:4), yet he did not give him a particular account by revelation at what times, and by what steps, it should go away, 1. Because the knowledge of the former was necessary to his preparing the ark, and settling himself in it; but the knowledge of the latter would serve only to gratify his curiosity, and the concealing of it from him would be the needful exercise of his faith and patience. And, 2. He could not foresee the flood, but by revelation; but he might, by ordinary means, discover the decrease of it, and therefore God was pleased to leave him to the use of them.
II. That though Noah by faith expected his enlargement, and by patience waited for it, yet he was inquisitive concerning it, as one that thought it long to be thus confined. Note, Desires of release out of trouble, earnest expectations of it, and enquiries concerning its advances towards us, will very well consist with the sincerity of faith and patience. He that believes does not make haste to run before God, but he does make haste to go forth to meet him, Isa 28:16. Particularly, 1. Noah sent forth a raven through the window of the ark, which went forth, as the Hebrew phrase is, going forth and returning, that is, flying about, and feeding on the carcases that floated, but returning to the ark for rest; probably not in it, but upon it. This gave Noah little satisfaction; therefore, 2. He sent forth a dove, which returned the first time with no good news, but probably wet and dirty; but, the second time, she brought an olive-leaf in her bill, which appeared to be first plucked off, a plain indication that now the trees, the fruit-trees, began to appear above water. Note here, (1.) That Noah sent forth the dove the second time seven days after the first time, and the third time was after seven days too; and probably the first sending of her out was seven days after the sending forth of the raven. This intimates that it was done on the sabbath day, which, it should seem, Noah religiously observed in the ark. Having kept the sabbath in a solemn assembly of his little church, he then expected special blessings from heaven, and enquired concerning them. Having directed his prayer, he looked up, Psa 5:3. (2.) The dove is an emblem of a gracious soul, which finding no rest for its foot, no solid peace or satisfaction in this world, this deluged defiling world, returns to Christ as to its ark, as to its Noah. The carnal heart, like the raven, takes up with the world, and feeds on the carrions it finds there; but return thou to thy rest, O my soul, to thy Noah, so the word is, Psa 116:7. O that I had wings like a dove, to flee to him! Psa 55:6. And as Noah put forth his hand, and took the dove, and pulled her in to him, into the ark, so Christ will graciously preserve, and help, and welcome, those that fly to him for rest. (3.) The olive-branch, which was an emblem of peace, was brought, not by the raven, a bird of prey, nor by a gay and proud peacock, but by a mild, patient, humble dove. It is a dove-like disposition that brings into the world earnests of rest and joy. (4.) Some make these things an allegory. The law was first sent forth like the raven, but brought no tidings of the assuaging of the waters of God's wrath, with which the world of mankind was deluged; therefore, in the fulness of time, God sent forth his gospel, as the dove, in the likeness of which the Holy Spirit descended, and this presents us with an olive-branch and brings in a better hope.

He sent forth a dove - The dove was sent forth thrice; the first time she speedily returned, having, in all probability, gone but a little way from the ark, as she must naturally be terrified at the appearance of the waters. After seven days, being sent out a second time, she returned with an olive leaf pluckt off, Gen 8:11, an emblem of the restoration of peace between God and the earth; and from this circumstance the olive has been the emblem of peace among all civilized nations. At the end of the other seven days the dove being sent out the third time, returned no more, from which Noah conjectured that the earth was now sufficiently drained, and therefore removed the covering of the ark, which probably gave liberty to many of the fowls to fly off, which circumstance would afford him the greater facility in making arrangements for disembarking the beasts and reptiles, and heavy-bodied domestic fowls, which might yet remain. See Gen 8:17.

Also he sent forth a dove from him,.... Seven days after he had sent out the raven, as in Gen 8:10.

to see if the waters were abated from off the face of the ground; for the dove is a creature that delights in cleanness, flies low, and goes far off, so that if it returned not again, he might conclude that the waters were gone off the earth; but being a sociable creature, and familiar to men, and especially loving to its mate, if they were not gone off, it would certainly return again. This some take to be an emblem of the Gospel, bringing the good tidings of peace, pardon, righteousness and salvation by Jesus Christ: rather it is an emblem of a sensible sinner, and true believer in Christ, being mournful, timorous, swift, modest, and affectionate; such persons, like doves of the valley, mourn for their iniquities; tremble at the sight of their sins, and the curses of the law, at the apprehension of divine wrath, at the awful judgment of God; and are fearful lest Christ should not receive them, to whom they swiftly fly for refuge, as doves to their windows; and who are modest, meek, and lowly, and affectionate to Christ, and one another. The Targum of Jonathan calls this an house dove, or tame one: hence, perhaps, came the practice of making use of doves as messengers to carry letters from place to place (o).

(o) Plin. Nat. Hist. l. 10. c. 37.

Also he sent forth a dove--a bird flying low and naturally disposed to return to the place of her abode.