Above all gods— That is, "Infinitely superior to all those imagined deities which other nations worship as their gods." Mudge renders the first clause, yes, I myself have experienced that the Lord, &c. and he observes, that אני ani, seems to have an emphasis, to shew that the author had experienced the divine power, perhaps in arming or controuling the elements in his favour.
Related Commentaries of Psalms 135:5
Psalms 135:5
5 For I know that the LORD is great, and that our Lord is above all gods.