Etham
    perhaps another name for Khetam, or "fortress," on the Shur or
    great wall of Egypt, which extended from the Mediterranean to
    the Gulf of Suez. Here the Israelites made their third
    encampment (Ex. 13:20; Num. 33:6). The camp was probably a
    little to the west of the modern town of Ismailia. Here the
    Israelites were commanded to change their route (Ex. 14:2), and
    "turn" towards the south, and encamp before Pi-hahiroth. (See
    EXODUS; PITHOM.)



 Etham, their strength; their sign