Deep should rather be rendered quiet. When the restless ambition of Egypt should be curbed, there would come about peace and quiet prosperity. This is thought by many to be a glance forward at the Messianic blessing of the future; but it does not necessarily look so far.
Related Commentaries of Ezekiel 32:14
Ezekiel 32:14
14 Then will I make their waters deep, and cause their rivers to run like oil, saith the Lord GOD.