I. THE UNCLEAN ARE IN GENERAL BINDS OF PREY.

1. Conspicuous amongst these are the eagles.

(1) There is little doubt that first name (נשר) is truly rendered "eagle." The term expresses the propensity of that creature for lacerating and tearing in pieces the flesh of its prey.

(2) Its associates in the group (verses 13, 14) are similar in nature. The "ossifrage," or bone-breaker, is probably the sea-eagle, whose habit is to break bones to get at the marrow. The "ospray" has its name in the Hebrew from its strength, and is generally understood to be the black eagle. The "vulture " - if that truly renders the original - is one of the largest and most formidable of the eagle kind. And what is construed the "kite," being in the same group, is probably some other description of eagle.

2. These are emblems of evil spirits.

(1) This, indeed, is true of all unclean birds, in proof of which see Matthew 13:4, compared with 19, and Revelation 18:2. They are so:

(2) From their traversing the air (see Ephesians 2:2). This is eminently the case with eagles, whose flight is towering, and whose nests even are in inaccessible mountain heights.

(3) From the formidableness of their attacks. From dizzy heights they swoop down upon their prey. They are armed with powerful talons, and strong, sharp, hooked beaks fitted to inflict dreadful wounds, tearing as they grip the flesh of their quivering victims (Job 39:30).

3. They also represent wicked men.

(1) Wicked men are the "children of Satan," and naturally exhibit the family likeness. The kings of Babylon and Tyre are compared to the eagle (Ezekiel 17:3, 7). The persecutors of the people of God are likewise so compared (Lamentations 4:19). The Roman armies, whose standards were eagles, are called eagles by our Lord (Matthew 24:28).

(2) The lesson for us is to avoid the disposition of the wicked, and to beware of their relentless voracity and diabolical cruelty. God is stronger than the "powers of the air."

II. SOME UNCLEAN BIRDS ARE PROWLERS OF THE NIGHT.

1. This characterizes the next group (verses 15-19).

(1) The Hebrew name for the "raven" (ערב) is that commonly used for evening. Our name "raven" probably comes from their ravening. The raven Noah sent forth from the ark, which wandered to and fro, and resting upon floating carcasses or what dry thing it could find, was an emblem of an unclean dark spirit, which is cast out from the Church of God, and from the hearts of his people, and wanders among the moral carcasses, the dead in trespasses and sins (comp. Zechariah 13:2; Matthew 12:43).

(2) Keep close to Jesus, lest, departing from him, we may invite this unclean spirit to return with seven others more wicked than himself.

2. With the raven owls are associated (verses 16-19).

(1) These are creatures whose vision will not endure the blaze of day, but who have wonderful sight in the dark. That rendered "hawk" has its name here (דאה) from the swiftness of its flight; but in Daniel 14:13 (ראה) from the sharpness of its sight.

(2) They are distinguished from each other by particular habits. That in our version called the "night hawk" (תחמס) is the screech-owl. Its screams arc violent; and these birds in general make fearful and doleful sounds in the night. This does not argue favourably for the happiness of evil spirits.

(3) Wicked men also, like owls, hate the light. When honest people of the day are sleeping, these prowlers are plotting mischief. Witness the burglaries, the murders, the prostitutions, the debaucheries, practiced by them under the cover of darkness.

III. UNCLEAN BIRDS ARE GROVELLING IN THEIR HABITS.

1. Such are the "fowls that creep going upon all four."

(1) The bat is a creature of this class. It has claws attached to its leathern wings, which serve it instead of feet to crawl by.

(2) This description includes also insects from which exceptions are taken in the verse following.

2. They are types of wicked intelligences.

(1) Some devils have a passion for enshrining themselves in organic bodies. The incarnation of Satan in the serpent was not the last attempt. There were demoniacal possessions in our Lord's day; and when expelled from human beings, they preferred the bodies of swine to having no organic habitation.

(2) Wicked men grovel in the most revolting moral filth.

3. In what contrast to these are the flood!

(1) The dove sent forth by Noah is a figure of the Spirit of God, the gracious Messenger and Dispenser of peace to the Church; but who is often grieved by the impurities of men (Matthew 3:16). The fruit of the Spirit, is peace; and those who exemplify it are called doves (Matthew 10:16).

(2) The lark also is a clean creature, who soars high and sings gloriously in the light of the morning. How angelical! how saintly!

(3) While winged insects that could not leap from the ground were unclean, to show that those men are morally so who are wholly given to the cares of this world; those with benders above their feet, in our version called "legs," those with crouching joints to stoop and spring with, as locusts and grasshoppers, for the opposite reason are clean. The Baptist lived principally upon locusts in the wilderness. - J.A.M.

I. THE NATURAL. Use no intoxicants; and thus never acquire a passion for them.

II. THE MEDICAL. Some treat drunkenness as a disease; and by medicine seek to destroy the appetite for alcohol.

III. THE SANITARY. Asylums for inebriates have been opened, which combine physical and moral means to effect a cure; and with success.

IV. THE LEGAL. Its object is to control or arrest the evil; and by prohibition of its manufacture and sale, to remove it from the land.

V. THE VOLUNTARY. This involves the pledge and membership in societies banded together for mutual help and safety. Earnest work for others is a good preventative, so long as it is actively continued.

VI. THE SPIRITUAL. Grace, wherever received, casts out the demon of drink.

VII. THE PHILANTHROPIC. Here is a reform in which to engage. The beneficent change in public sentiment demands devout thankfulness, and is prophetic of what shall be achieved.

(Lewis O. Thompson.)