Psalms 135:1 - Ellicott's Commentary On The Whole Bible

The psalm opens with an adaptation and expansion (comp. Psalms 116:19) of Psalms 134:1. As there, the priestly class is addressed. Some, however, think that the addition, “courts of the house of our God,” as well as Psalms 135:19, make the application to all these standing in covenant relation to Jehovah. This is possible, but not proved by the evidence adduced.