John Trapp on Jeremiah 2:18

Ver. 18. And now what haſt thou to do in the way of Egypt?] Why truſteſt thou to carnal combinations, which thou haſt formerly found to be ſo ſucceſsleſſe? wilt thou never be warned of theſe broken ciſterns? or haſt thou a mind to be ground to powder betwixt thoſe two mil-ſtones, of Egypt and Aſſyria, after whom thou hankereſt? Pſal. 146.3. David having entered a Caveat againſt creature confidence, perſwades people to truſt in God alone: See alſo Pſal. 62.8. 9, 10.

To drink the waters of Sihor] i. e. Of Nilus called Sihor, of its blackneſſe,Limoſus eſt Nilus & oblimat Aegypt. or muddineſſe; and in Greek [non-Latin text not transcribed] Black: to drink the waters of it here, is to draw the Egyptian forces to thine aſſiſtance, and (as ſome think) to partake with them in their ſuperſtitions.

To drink of the water of the river] i. e. Of Euphrates, that river by an eminency.