Prediger 1:7

"All rivers run into the sea, and the sea becomes not full; to the place whence the rivers came, thither they always return again." Instead of nehhárim, nehhalim was preferred, because it is the more general name for flowing waters, brooks, and rivers; נחל (from נחל, cavare), אפיק (from אפק, continere), and (Arab.) wadin (from the root-idea of stretching, extending), all three denote the channel or bed, and then the water flowing in it. The sentence, "all rivers run into the sea," is consistent with fact. Manifestly the author does not mean that they all immediately flow thither; and by "the sea" he does not mean this or that sea; nor does he think, as the Targ. explains, of the earth as a ring (גּוּשׁפּנקא, Pers. angusht-bâne, properly "finger-guard") surrounding the ocean: but the sea in general is meant, perhaps including also the ocean that is hidden. If we include this internal ocean, then the rivers which lose themselves in hollows, deserts, or inland lakes, which have no visible outlet, form no exception. But the expression refers first of all to the visible sea-basins, which gain no apparent increase by these masses of water being emptied into them: "the sea, it becomes not full;" איננּוּ (Mishn. אינו) has the reflex. pron., as at Exo 3:2; Lev 13:34, and elsewhere. If the sea became full, then there would be a real change; but this sea, which, as Aristophanes says (Clouds, 1294f.), οὐδὲν γίγνεται ἐπιῤῥηεόντων τῶν ποταμῶν πλείων, represents also the eternal sameness. In Lev 13:7, Symm., Jer., Luther, and also Zckler, translate שׁ in the sense of "from whence;" others, as Ginsburg, venture to take שׁם in the sense of משּׁם; both interpretations are linguistically inadmissible. Generally the author does not mean to say that the rivers return to their so…

In this chapter we have, I. The inscription, or title of the book (Ecc 1:1). II. The general doctrine of the vanity of the creature laid down (Ecc 1:2) and explained (Ecc 1:3). III. The proof of this doctrine, taken, 1. From the shortness of human life and the multitude of births and burials in this life (Ecc 1:4). 2. From the inconstant nature, and constant revolutions, of all the creatures, and the perpetual flux and reflux they are in, the sun, wind, and water (Ecc 1:5-7). 3. From the abundant toil man has about them and the little satisfaction he has in them (Ecc 1:8). 4. From the return of the same things again, which shows the end of all perfection, and that the stock is exhausted (Ecc 1:9, Ecc 1:10). 5. From the oblivion to which all things are condemned (Ecc 1:11). IV. The first instance of the vanity of man's knowledge, and all the parts of learning, especially natural philosophy and politics. Observe, 1. The trial Solomon made of these (Ecc 1:12, Ecc 1:13, Ecc 1:16, Ecc 1:17). 2. His judgment of them, that all is vanity (Ecc 1:14). For, (1.) There is labour in getting knowledge (Ecc 1:13). (2.) There is little good to be done with it (Ecc 1:15). (3.) There is no satisfaction in it (Ecc 1:18). And, if this is vanity and vexation, all other things in this world, being much inferior to it in dignity and worth, must needs be so too. A great scholar cannot be happy unless he be a true saint.

1:7-8 the sea is never full . . . we are never satisfied: This image introduces the unfulfilling nature of life.