R’ Yitzchak expounded on, “On willows in its midst we hung our harps.” (Psalms 137:2) Come and see – the dirt of the land of Israel is for repentance. While they were still in the land of Israel, Jeremiah was saying to them ‘repent before the judgement is sealed upon you,’ and they did not accept his words. Once they were exiled, they kept themselves sanctified through the commandments, taking their harps and hanging them on the willows. “For there our captors asked us for words of song…” (Psalms 137:3) At that time the nations of the world said to them: stand up and sing before idols just as you would sing in the Holy Temple. They replied: if we had sung songs in our place, we would not have been exiles. And now how should we sing songs before idols?! R ‘ Yitzchak Tavlai would say: to what is this to be compared? To a king of flesh and blood who married the daughter of kings. He said to her: get up and bring me a cup to drink, and she did not want to serve him. He was angry with her and drove her from his house, and she went and married a man who was afflicted with boils. He said: get up and bring me a cup to drink. She said to him: worthless one! I was a daughter of kings, married to a king, and because he said ‘bring me a drink’ and I did not want to serve him he was angry with me and drove me from his home. In that case if I had served him I would have added to my honor and had honor in my place, and now you say to me get up and serve me?! So Israel says to the nations of the world: if we had sang songs before the Holy One in our place on all the miracles which He did for us, we would have stayed in our place and not been exiled from our land. Now we should sing songs before idols?! Immediately they arose and killed heaps and heaps of them, and even though many of them were killed Israel rejoiced that they did not sing songs before the idols, as it says “…and our tormentors [asked of us] mirth…” (ibid.) At that moment the Holy One swore a whole oath to Israel. He said of Himself, so to speak, if I do not keep my oath, as it says “If I forget you, O Jerusalem, may my right hand forget [its skill].” (Psalms 137:5) The Holy One took His hand and placed it behind Him at the moment when Israel was exiled, just as it says “He has withdrawn His right hand from the enemy…” (Lamentations 2:3) The Holy One, so to speak, did not return it to its place. And so too the Holy One said to Israel: I will forget My right hand which I placed behind Me if I do not fulfill my oath to you and not forget you among the nations. “May my tongue cling to my palate, if I do not remember you, if I do not bring up Jerusalem at the beginning of my joy.” (Psalms 137:6) In the future the Holy One will return to Jerusalem all of her joy, as it says “And the redeemed of Zion shall return, and they shall come to Zion with song, with joy of days of yore shall be upon their heads…” (Isaiah 35:10) And anyone who mourns for Jerusalem in this world will rejoice with her in the time to come, as it says “Rejoice with Jerusalem and exult in her all those who love her: rejoice with her a rejoicing, all who mourn over her.” (Isaiah 66:10) They said in the name of Abaye: joy only comes on the ninth of Av, because they mandated mourning then in this time and in the future the Holy One will make it into a holiday, as it says “…and I will turn their mourning into joy and will comfort them and make them rejoice from their sorrow.” (Jeremiah 31:12) ... “No one pitches my tent anymore, or sets up my curtains.” (Jeremiah 10:20) What is this, does it mean that the Holy Temple will not be rebuilt in the future?! No, rather it is saying that no one from among you will pitch my tent anymore nor anyone from among you shall set up my curtains. The First Temple, which was built by flesh and blood, fell at the hands of the enemy. But the final Sanctuary that will be built by the Holy One, as it says “The Lord is the builder of Jerusalem; He will gather the outcasts of Israel,” (Psalms 147:2) will not be destroyed. Therefore it says “My tent has been spoiled…” (Jeremiah 10:20)