Jeremiah appeals to the obedience which migratory birds render to the law of their natures. The "stork" arrives in Palestine about March 21, and after a six weeks' halt departs for the north of Europe. It takes its flight by day, at a vast height in the air ("in the heaven"). The appearance of the "turtle-dove" is one of the pleasant signs of the approach of spring.

The crane and the swallow - Rather, "the swift and the crane."

Hosea has given a very elegant turn to the same image, in the way of metaphor or allegory: -

"I drew them with human cords, with the bands of love:

And I was to them as he that lifteth up the yoke upon their cheek;

And I laid down their fodder before them."

Jeremiah 8:7The stork in the heaven - The birds of passage know the times of their going and return, and punctually observe them; they obey the dictates of nature, but my people do not obey my law.

Yea, the stork in the heaven knoweth her appointed times,.... Of going and returning; for this is a bird of passage, as Pliny (d) and other naturalists observe; which goes away as winter approaches, and returns when that is over. The temperature of the air, as to heat and cold, and the natural propensity of such birds of passage to breed their young, are thought to be the incentives to change their habitation; and wonderful thing it is in nature, that they should know the proper time of their passage, what places to go to, and how to steer their course thither; and, as the above naturalist observes, they go and come in the night:

and the turtle, and the crane, and the swallow, observe the time of their coming: for these also are birds of passage; the turtle is absent in the winter, and its coming is a sign of spring, Sol 2:11, the crane, according to Aelianus (e), goes away with the stork, and returns when winter is over; and the same is observable of the swallow; hence the common saying, one swallow does not make spring; so Horace (f) uses "hirundine prima" for the beginning of spring. Where these birds retire to is not known; some think the swallows fly into Egypt and Ethiopia; but Olaus Magnus (g) says they lurk in holes, and even under water, where they hang together, and are sometimes drawn out in clusters, and being brought to the fire, and thawed, will revive and fly about.

But my people know not the judgment of the Lord; meaning not the unsearchable judgments of God, or those providential dispensations of God which are a great deep, and are not clearly discerned and known by the best of men; but either his own judgments, which are inflicted upon wicked men as punishments for sin, which yet are not taken notice of, and duly attended to, as they should be; or rather the law of God, and his revealed word, which is the rule of judgment and justice, and a declaration of righteousness, showing what is just and good, and ought to be done, which they were willingly ignorant of; or else the final and future judgment of God after death, to which all men must come, and into which every thought, word, and work, will be brought, and which day wicked men put far from them; see Isaiah 1:3.

(d) Nat. Hist. l. 10. c. 23. (e) De Animal. l. 3. c. 23. (f) Ep. l. 1. Ep. 7. (g) De Ritu Gent. Septent. l. 19. c. 11.

Yea, the stork in the heaven knoweth her appointed times; and the turtle and the crane and the swallow observe the time of their coming; but my people know not the {e} judgment of the LORD.

(e) He accuses them in that they are more ignorant of God's judgments, than these birds are of their appointed seasons to discern the cold and heat.

8:7 Appointed time - The seasons of her going and coming. The judgment - God's vengeance, hovering over Jerusalem, and Judea.

7. The instinct of the migratory birds leads them with unfailing regularity to return every spring from their winter abodes in summer climes (So 2:12); but God's people will not return to Him even when the winter of His wrath is past, and He invites them back to the spring of His favor.

in the heaven-emphatical. The birds whose very element is the air, in which they are never at rest, yet show a steady sagacity, which God's people do not.

times-namely, of migrating, and of returning.

my people-This honorable title aggravates the unnatural perversity of the Jews towards their God.

know not, &c.-(Jer 5:4, 5; Isa 1:3).

8:4-13 What brought this ruin? 1. The people would not attend to reason; they would not act in the affairs of their souls with common prudence. Sin is backsliding; it is going back from the way that leads to life, to that which leads to destruction. 2. They would not attend to the warning of conscience. They did not take the first step towards repentance: true repentance begins in serious inquiry as to what we have done, from conviction that we have done amiss. 3. They would not attend to the ways of providence, nor understand the voice of God in them, ver. 7. They know not how to improve the seasons of grace, which God affords. Many boast of their religious knowledge, yet, unless taught by the Spirit of God, the instinct of brutes is a more sure guide than their supposed wisdom. 4. They would not attend to the written word. Many enjoy abundance of the means of grace, have Bibles and ministers, but they have them in vain. They will soon be ashamed of their devices. The pretenders to wisdom were the priests and the false prophets. They flattered people in sin, and so flattered them into destruction, silencing their fears and complaints with, All is well. Selfish teachers may promise peace when there is no peace; and thus men encourage each other in committing evil; but in the day of visitation they will have no refuge to flee unto.