Commento su Salmi 137:5

If I forget you, O Jerusalem The congregation of Israel says this.

If I forget you, O Jerusalem – The verse is putting forward the idea that just as the right hand is ready for all one’s motions and occupations, so Jerusalem is the beloved of all our motions and occupations. Therefore it is impossible to forget her just as it is impossible to forget one’s right hand. Even more than this, “May my tongue cling to my palate, if I do not remember you…” (Psalms 137:6), that all my speech is about you and if I do not speak of your memories I will be as a mute whose tongue is stuck to his palate. Not only when I am exiled and wandering, but also “…if I do not bring up Jerusalem at the beginning of my joy,” (ibid.) also if I am rejoicing in worldly success Jerusalem should be above it all, to the point where all joy is overturned to sadness through the memory of her destruction: