The “table” points to the lectisternium (or “feast”), which was a prominent feature in Assyrian and other forms of polytheism. Phœnician inscriptions have been found with the names Gad-Ashtoreth and Gad-Moloch. renders “for the demon” or “Genius.” The name of Baal-Gad ( Joshua 11:17 Joshua 12:17) indicates the early prevalence of the worship in Syria.
That prepare a table for that troop.-Hebrew, “for the Gad,” probably the planet Jupiter, worshipped as the “greater fortune,” the giver of good luck. The same phrase occurs, however, as connected with the exiles in Psalm 137:5. The words imply, like Isaiah 65:3-5, the abandonment of the worship of the Temple for a heathen ritual, but those that follow point, it will be seen, to Canaanite rather than Babylonian idolatry, and, so far, are in favour of the earlier date of the chapter. Ellicott's Commentary for English Readers(11) That forget my holy mountain.