Genesis 2:10

"And there was a river going out of Eden, to water the garden; and from thence it divided itself, and became four heads;" i.e., the stream took its rise in Eden, flowed through the garden to water it, and on leaving the garden was divided into four heads or beginnings of rivers, that is, into four arms or separate streams. For this meaning of ראשׁים see Eze 16:25; Lam 2:19. Of the four rivers whose names are given to show the geographical situation of paradise, the last two are unquestionably Tigris and Euphrates. Hiddekel occurs in Dan 10:4 as the Hebrew name for Tigris; in the inscriptions of Darius it is called Tigrâ (or the arrow, according to Strabo, Pliny, and Curtius), from the Zendic tighra, pointed, sharp, from which probably the meaning stormy (rapidus Tigris, Hor. Carm. 4, 14, 46) was derived. It flows before (קדמת), in front of, Assyria, not to the east of Assyria; for the province of Assyria, which must be intended here, was on the eastern side of the Tigris: moreover, neither the meaning, "to the east of," nor the identity of קדמת and מקדם has been, or can be, established from Gen 4:16; Sa1 13:5, or Eze 39:11, which are the only other passages in which the word occurs, as Ewald himself acknowledges. P'rath, which was not more minutely described because it was so generally known, is the Euphrates; in old Persian, Ufrâtu, according to Delitzsch, or the good and fertile stream; Ufrâtu, according to Spiegler, or the well-progressing stream. According to the present condition of the soil, the sources of the Euphrates and Tigris are not so closely connected that they could be regarded as the commencements of a common stream which has ceased to exist. The main sources of the Tigris, it is true, are only 2000 paces from the Euphrates, but they are to the north…

This chapter is an appendix to the history of the creation, more particularly explaining and enlarging upon that part of the history which relates immediately to man, the favourite of this lower world. We have in it, I. The institution and sanctification of the sabbath, which was made for man, to further his holiness and comfort (Gen 2:1-3). II. A more particular account of man's creation, as the centre and summary of the whole work (Gen 2:1-7). III. A description of the garden of Eden, and the placing of man in it under the obligations of a law and covenant (Gen 2:8-17). IV. The creation of the woman, her marriage to the man, and the institution of the ordinance of marriage (Gen 2:18, etc.).

2:10-14 This detailed description portrays the eastern region around Eden as a mountain with rivers flowing out to the world. Eden’s beauty and fertility enriched the whole earth. 2:10 The river that was watering the garden was a material blessing (bringing agricultural fertility) and a symbol of God’s presence (cp. Ps 46:4; Ezek 47:1-12; Zech 14:8; Rev 22:1-2). • dividing into four branches (literally heads): The common understanding is that one river had its source in Eden, flowed down through the garden, and then split into the four rivers named.