Jamieson, Fausset and Brown on Psalms 89:8-14

8-14. To illustrate His power and faithfulness examples are cited from history. His control of the sea (the most mighty and unstable object in nature), and of Egypt (Psa 87:4), the first great foe of Israel (subjected to utter helplessness from pride and insolence), are specimens. At the same time, the whole frame of nature founded and sustained by Him, Tabor and Hermon for "east and west," and "north and south," together representing the whole world, declare the same truth as to His attributes.