Albert Barnes Commentary Psalms 108:9

"Moab is my washpot; Upon Edom will I cast my shoe; Over Philistia will I shout." — Psalms 108:9 (ASV)

Moab ... - This is fallen from Psalm 60:8. The only change is in the close of the verse. Instead of Philistia, triumph thou because of me (Psalms 60:8), it is here, Over Philistia will I triumph. Why the change was made is unknown.