Now the works of the flesh are manifest. To obey the spirit and to oppose the flesh, are two great objects which have been set before Christians, and for the attainment of which they have been urged to make the most strenuous exertions. In accordance with these views, he now draws a picture both of the flesh and of the spirit. If men knew themselves, they would not need this inspired declaration, for they are nothing but flesh; but such is the hypocrisy belonging to our natural state, we never perceive our depravity till the tree has been fully made known by its fruits. (Matthew 7:16; Luke 6:44.) The apostle therefore now points out to us those sins against which we must fight, in order that we may not live according to the flesh. He does not indeed enumerate them all, and so he himself states at the conclusion of the list; but from those brought forward, the character of the remainder may be easily ascertained. Adultery and fornication are placed first, and next follows uncleanness, which extends to every species of unchastity. Lasciviousness appears to be a subsidiary term, for the Greek word aselgeia, which is thus translated, is applied to those who lead wanton and dissolute lives. These four denote sins forbidden by the seventh commandment. The next mentioned is idolatry, which is here employed as a general term for services grossly superstitious and openly practiced. Seven classes which immediately follow, are closely allied, and another two are afterwards added. Anger and hatred differ chiefly in this, that anger is short, and hatred is lasting. Emulations and envyings are the occasions of hatred; and the following distinction between them is stated by Aristotle, in his second book on Rhetoric: -- He who emulates is grieved that another should excel him, not because the virtue or worth of that person, in itself considered, gives him uneasiness, but because he would wish to be superior. The envious man has no desire to excel, but is grieved at the excellence of other men. None, therefore, he tells us, but low and mean persons indulge in envy, while emulation dwells in lofty and heroic minds. Paul declares both to be diseases of the flesh. From anger and hatred arise variance, strife, seditions; and he even traces the consequences so far as to mention murders and witchcraft [1] By revellings, [2] he means a dissolute life, and every kind of intemperance in the gratification of the palate. It deserves notice, that heresies are enumerated among the works of the flesh; for it shows clearly that the word flesh is not confined, as the sophists imagine, to sensuality. What produces heresies but ambition, which deals not with the lower senses, but with the highest faculties of the mind? He says that these works are manifest, so that no man may think that he will gain anything by evading the question; [3] for what avails it to deny that the flesh reigns in us, if the fruit betrays the quality of the tree?

Footnotes

1 - "The original word pharmakeia sometimes denotes poisonings,' which were frequently practised among the heathens. Sometimes it signifies incantations or magic arts, or witchcraft, by which impostors and cheats endeavoured to impose on ignorant and credulous people, and which were carried on by poisonous intoxicating draughts and ointments, by which they did great mischief to the bodies of men. As it is here immediately placed after idolatry, I should imagine that the apostle intended those cursed arts of incantations and charms, those various methods of imposture and cheats, which were made use of by the heathen priests, to promote the idolatrous reverence and worship of their false gods. (See Revelation 18:23.)" -- Chandler.

2 - By komoi are denoted those nocturnal revellings usually attendant on an evening of debauchery, consisting of licentious singing, dancing, and parading the streets with drunken riotings." -- Bloomfield.

3 - "En volant nier, et usant de tergiversation." "By wishing to deny it, and by shuffling."

Now the works of the flesh - What the flesh, or what corrupt and unrenewed human nature produces.
Are manifest - Plain, well-known. The world is full of illustrations of what corrupt human nature produces, and as to the existence and nature of those works, no one can be ignorant. It is evident here that the word σὰρξ sarx, "flesh," is used to denote corrupt human nature, and not merely the body; since many of the vices here enumerated are the passions of the mind or the soul, rather than of the body. Such are "wrath," "strife," "heresies," "envyings," etc., which cannot be said to have their seat in the body. If the word, therefore, is used to denote human nature, the passage furnishes a sad commentary on its tendency, and on the character of man. It is closely parallel to the declaration of the Saviour in Matthew 15:19. Of the nature of most of these sins, or works of the flesh, it is unnecessary to offer any comment. They are not so rare as not to be well known, and the meaning of the words requires little exposition. In regard to the existence of these vices as the result of human nature, the notes at Romans. 1 may be examined; or a single glance at the history of the past, or at the present condition of the pagan and a large part of the Christian world, would furnish an ample and a painful demonstration.

Now the works of the flesh are manifest - By flesh we are to understand the evil and fallen state of the soul, no longer under the guidance of God's Spirit and right reason, but under the animal passions; and they are even rendered more irregular and turbulent by the influence of sin; so that man is in a worse state than the brute: and so all-commanding is this evil nature that it leads men into all kinds of crimes; and among them the following, which are manifest - known to all, and most prevalent; and, though these are most solemnly forbidden by your law, the observance of its ordinances gives no power to overcome them, and provides no pardon for the guilt and condemnation produced by them.
Adultery - Μοιχεια· Illicit connection with a married person. This word is wanting in this place in the best MSS., versions, and fathers; the next term often comprehending both.
Fornication - Πορνεια· Illicit connection between single or unmarried persons; yet often signifying adultery also.
Uncleanness - Ακαθαπσια· Whatever is opposite to purity; probably meaning here, as in Romans 1:24; 2-Corinthians 12:21, unnatural practices; sodomy, bestiality.
Lasciviousness - Ασελγεια· Whatever is contrary to chastity; all lewdness.

(16) Now the works of the flesh are manifest, which are [these]; Adultery, fornication, uncleanness, lasciviousness,
(16) He sets out that particularly of which he spoke generally, reckoning up some principal effects of the flesh, and opposing them to the fruits of the Spirit, that no man may pretend ignorance.

Now the works of the flesh are manifest,.... By "flesh" is meant corrupt nature, as before, and by the works of it, not only external acts of sin, but inward lusts; for such are here mentioned among its works, as "hatred", "wrath", "envyings", &c. and both external and internal acts are so called, because they spring from the flesh, or corrupt nature, and are what that urges and solicits to, and are wrought thereby, and are what denominate and show men to be carnal: these are said to be "manifest"; not that they are all, and always publicly done, and are open to the sight of men; for they are works of darkness, and often done in secret, though they are always manifest to God the searcher of hearts, and will be brought to light in the day of judgment; but they are known to be sins in some measure by the light of nature, and especially by the law of God; and a clear case it is, that they are contrary to the Spirit, both to the Spirit of God, and to the principle of grace he forms in the heart; and that such who live in the commission of them are not led by him, nor are under the influence of his grace:
which are these; though all are not mentioned, only some of the chief, by which judgment may be made of the rest:
adultery; this is left out in the Vulgate Latin, Syriac, and Ethiopic versions, and in the Alexandrian copy; it is a defilement of the marriage bed, and is the sin of uncleanness committed by two persons, one of which at least is in a married state, is condemned by the law of God and light of nature:
fornication; which though by many of the Gentiles was reckoned no sin, or a very small one, stands here among the works of the flesh, that are manifest and to be avoided; it is the sin of uncleanness committed by persons in a single state;
uncleanness, it is a general name for all unchastity, in thought, word, or action; and may here design more especially all unnatural lusts, as
sodomy, self-pollution, &c.
lasciviousness; or wantonness, all lustful dalliance, everything that leads on to acts of uncleanness, or attends them, as impure words, filthy gestures, and the like.

Confirming Galatians 5:18, by showing the contrariety between the works of the flesh and the fruit of the Spirit.
manifest--The hidden fleshly principle betrays itself palpably by its works, so that these are not hard to discover, and leave no doubt that they come not from the Spirit.
which are these--Greek, "such as," for instance.
Adultery--omitted in the oldest manuscripts.
lasciviousness--rather, "wantonness" petulance, capricious insolence; it may display itself in "lasciviousness," but not necessarily or constantly so (Mark 7:21-22, where it is not associated with fleshly lusts) [TRENCH]. "Works" (in the plural) are attributed to the "flesh," because they are divided, and often at variance with one another, and even when taken each one by itself, betray their fleshly origin. But the "fruit of the Spirit" (Galatians 5:23) is singular, because, however manifold the results, they form one harmonious whole. The results of the flesh are not dignified by the name "fruit"; they are but works (Ephesians 5:9, Ephesians 5:11). He enumerates those fleshly "works" (committed against our neighbor, against God, and against ourselves) to which the Galatians were most prone (the Celts have always been prone to disputations and internal strifes): and those manifestations of the fruit of the Spirit most needed by them (Galatians 5:13, Galatians 5:15). This passage shows that "the flesh" does not mean merely sensuality, as opposed to spirituality: for "divisions" in the catalogue here do not flow from sensuality. The identification of "the natural (Greek, 'animal-souled') man," with the "carnal" or fleshly man (1-Corinthians 2:14), shows that "the flesh" expresses human nature as estranged from God. TRENCH observes, as a proof of our fallen state, how much richer is every vocabulary in words for sins, than in those for graces. Paul enumerates seventeen "works of the flesh," only nine manifestations of "the fruit of the Spirit" (compare Ephesians 4:31).

Now the works of the flesh . . . are these. The tree is known by its fruits. We show our fruits whether we are of the flesh or Spirit. The works of the flesh are first given. Paul names (1) Three sins of sensuality; (2) two spiritual sins of false religion; (3) sins against our fellow men, of which nine are specified; (4) sins of intemperance, of which two are named. The sins of sensuality were sanctioned by the heathen religion in the worship of Venus, and sanctioned by the purest heathen moralists. Christianity had to breast the current of the whole world. It differs from heathen morality as day from night.
Witchcraft. Sorcery or magic, whether a superstition or deception, was prevalent in all the ancient world. See notes on Acts 19:19.
Drunkenness. A common sin of all ages.
Revellings. Any kind of riotous or unseemly conduct; carousals.
As I have also told you in time past. As before, when in Galatia, so now he tells them again that none who do these things can expect to be saved.

Now the works of the flesh - By which that inward principle is discovered. Are manifest - Plain and undeniable. Works are mentioned in the plural because they are distinct from, and often inconsistent with, each other. But "the fruit of the Spirit" is mentioned in the singular, Galatians 5:22, as being all consistent and connected together. Which are these - He enumerates those "works of the flesh" to which the Galatians were most inclined; and those parts of "the fruit of the Spirit" of which they stood in the greatest need. Lasciviousness - The Greek word means anything inward or outward that is contrary to chastity, and yet short of actual uncleanness.