They are raging waves of the sea, foaming out their own shame.  There seems to be a suggestion here of the shamelessness of their behavior.  They are not subtle, they are not ashamed.  They are proud of their antinomian doctrine and practice, and boast of it before the world.  They rave about their liberty, but it is a liberty which is not the genuine liberty of a child of God redeemed by the precious blood of Christ, but it is (in their mind) a license to indulge the flesh.  Rather than being purified to be members of a peculiar people, they think they now have their free ticket to heaven, and can practice all the uncleanness they enjoy while still on earth.  What does this evidence but that they are not new creatures in Christ, but are still living in the corruption and shame of sin?  Each time they indulge their sinful appetites in the name of their false gospel, they are foaming out their own shame, even as the troubled waters of the sea cast up mire and dirt.

The last description is perhaps the most frightening of all.  “Wandering stars,” Jude calls them, “to whom is reserved the blackness of darkness forever.”  They profess to be children of light, but in reality they are like a distant star, lost in the vast area of space, wandering in great blackness without hope of ever finding a settled resting place.  But the spiritual darkness in which these men abide is nothing compared to the horror of great darkness that awaits them in the pit of damnation.  There can be but little doubt that the “blackness of darkness” reserved for these men points to the unspeakable fate that awaits all the enemies of Christ’s gospel.  And, make no mistake about it, every person who makes the Gospel into a license for indulgence of every fleshly desire is its great enemy.  For these persons God has reserved everlasting darkness, a darkness more oppressive and more terrifying than that which befell Egypt during the ninth plague.  How this should impress upon us the great necessity of understanding, not just the glory of free justification as described in the Gospel, but also the necessity of a new heart which is created in righteousness and true holiness!