Charles Ellicott Commentary Ezekiel 16:26

"Thou hast also committed fornication with the Egyptians, thy neighbors, great of flesh; and hast multiplied thy whoredom, to provoke me to anger." — Ezekiel 16:26 (ASV)

The Egyptians ... great of flesh. —The Egyptians are properly named first, because, even in the golden calf of the wilderness, the Israelites turned with eagerness to the worship of Egypt. This tendency seems to have been only suppressed, not extinguished, during the following ages, and remained always ready to develop itself, as in the calves of Jeroboam (1 Kings 12:28–30); but it received a great increase in strength during the reigns of Solomon and his successors.

The Egyptians are called great of flesh from the character of their popular worship, which was a thoroughly sensuous nature worship. The connection of Israel with Egypt in the later part of the monarchy was not only religious, but political, in bold defiance of the repeated Divine commands. Especially at this time, a great part of the work of Jeremiah was to oppose the tendency of the successive kings of Judah to alliance with Egypt.