This refers to the river Nile. In Joshua 13:3 it is "Sihor which is before Egypt." In Isaiah 23:3 the produce of the harvest of Egypt was brought to the sea by the river, and from thence was fetched by the Syrian merchants. In Jeremiah 2:18 Israel is warned against seeking the waters of the Nile; that is, trusting in Egypt instead of in God: cf. Jeremiah 2:36 . In 1 Chronicles 13:5 it is written SHIHOR, as the south-west boundary of Palestine. Some consider that Joshua 13:3 and 1 Chronicles 13:5 refer to the Wady el Arish, which was also called 'the river of Egypt.'