¹ tn Grk “fell upon a place of two seas.” The most common explanation for this term is that it refers to a reef or sandbar with the sea on both sides, as noted in BDAG 245 s.v. διθάλασσος: the “τόπος δ. Ac 27:41 is a semantic unit signifying a point (of land jutting out with water on both sides).” However, Greek had terms for a “sandbank” (θῖς [this], ταινία [tainia]), a “reef” (ἑρμα [herma]), “strait” (στενόν [stenon]), “promontory” (ἀρωτήρον [arōtēron]), and other nautical hazards, none of which are used by the author here. NEB here translates τόπον διθάλασσον (topon dithalasson) as “cross-currents,” a proposal close to that advanced by J. M. Gilchrist, “The Historicity of Paul’s Shipwreck,” JSNT 61 (1996): 29-51, who suggests the meaning is “a patch of cross-seas,” where the waves are set at an angle to the wind, a particular hazard for sailors. Thus the term most likely refers to some sort of adverse sea conditions rather than a topographical feature like a reef or sandbar.

⁴ sn The imagery of a star seems to fit the nautical theme that Jude is developing. Stars were of course the guides to sailors at night, just as teachers are responsible to lead the flock through a benighted world. But false teachers, as wayward stars, are not fixed and hence offer unreliable, even disastrous guidance. They are thus both the dangerous reefs on which the ships could be destroyed and the false guides, leading them into these rocks. There is a special irony that these lights will be snuffed out, reserved for the darkest depths of eternal darkness.

⁶ tn Or perhaps “mainsail.” The meaning of this word is uncertain. BDAG 927 s.v. σκεῦος 1 has “τὸ σκεῦος Ac 27:17 seems to be the kedge or driving anchor” while C. Maurer (TDNT 7:362) notes, “The meaning in Ac. 27:17: χαλάσαντες τὸ σκεῦος, is uncertain. Prob. the ref. is not so much to taking down the sails as to throwing the draganchor overboard to lessen the speed of the ship.” In spite of this L&N 6.1 states, “In Ac 27:17, for example, the reference of σκεῦος is generally understood to be the mainsail.” A reference to the sail is highly unlikely because in a storm of the force described in Ac 27:14, the sail would have been taken down and reefed immediately, to prevent its being ripped to shreds or torn away by the gale.

² tn Though σπιλάδες (spilades) is frequently translated “blemishes” or “stains,” such is actually a translation of the Greek word σπίλοι (spiloi). The two words are quite similar, especially in their root or lexical forms (σπιλάς [spilas] and σπίλος [spilos] respectively). Some scholars have suggested that σπιλάδες in this context means the same thing as σπίλοι. But such could be the case only by a stretch of the imagination (see BDAG 938 s.v. σπιλάς for discussion). Others suggest that Jude’s spelling was in error (which also is doubtful). One reason for the tension is that in the parallel passage, 2 Pet 2:13, the term used is indeed σπίλος. And if either Jude used 2 Peter or 2 Peter used Jude, one would expect to see the same word. Jude, however, may have changed the wording for the sake of a subtle wordplay. The word σπιλάς was often used of a mere rock, though it normally was associated with a rock along the shore or one jutting out in the water. Thus, the false teachers would appear as “rocks”—as pillars in the community (cf. Matt 16:18; Gal 2:9), when in reality if a believer got too close to them his faith would get shipwrecked. Some suggest that σπιλάδες here means “hidden rocks.” Though this meaning is attested for the word, it is inappropriate in this context, since these false teachers are anything but hidden. They are dangerous because undiscerning folks get close to them, thinking they are rocks and pillars, when they are really dangerous reefs.