[And said], "If you do good, you do good for yourselves; and (17:7)

Almuntakhab Fi Tafsir Alquran Alkarim

There, you can see that if you imprint your deeds with wisdom and piety and conduct yourselves with prudence, you advantage yourselves of good behavior. But if you should bode ill, misbehave or commit yourselves to an evil line of conduct you will have harmed your own souls. Then, when in due time the second occasion* came to pass you were overpowered and vanquished that your countenances spoke a different language. Your eyes shriveled into darkness in your heads and you fell into the darkness of dismay and they -the enemies- broke into you Temple as they did once before and reduced to ruins all that they acquired

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(17:7) Beholdl If you did good it proved to be good for yourselves and if you committed evil it proved to be bad for your own selves. Then, when the time came for the fulfilment of the second warning, We set other enemies on you so that they might disfigure your faces and enter into the Temple just as the former enemies had entered and destroyed whatever they could lay their hands on *9 . . . . . .

[And said], "If you do good, you do good for yourselves; and meaning

*9) The historical background of the second degeneration and its chastisement is as follows:
The moral and religious fervour with which the Maccabees had started their movement gradually cooled down and was replaced by love of the world and empty external form. A split appeared among them and they themselves invited the Roman General, Pompey, to come to Palestine. Pompey turned his attention to this land in 63 B.C. and, taking Jerusalem, put an end to the political freedom of the Jews. But the Roman conquerors preferred to rule their dominions through the agency of the local chiefs rather than by direct control. Therefore, a local government was set up in Palestine which eventually passed into the hand of Herod, a clever Jew, in 40 B.C. This ruler is well known as Herod the Great. He ruled over the whole of Palestine and Jordan from 40 to 4 B.C. On the one hand Herod patronised the religious leaders to please the Jews, and on the other, he propagated the Roman culture and won the goodwill of Caesar by showing his loyalty and faithfulness to the Roman Empire. During, his reign, the Jews degenerated and fell to the lowest ebb of moral and religious life.
On the death of Herod his kingdom. was subdivided into three parts.His son, Archelaus, became the ruler of Samaria, Judaea and northern Edom. In A.D. 6. however, Caesar Augustus deprived him of his authority and put the state under his Roman governor, and this arrangement continued up till A.D. 41. This was precisely the time when Prophet Jesus (Peace be upon him) appeared to reform the Israelites whose religious leaders opposed him tooth and nail and even tried to get him the death sentence by the Roman governor, Pontius Pilate.
The second son of Herod, Herod Antipas, became the ruler of Galilee and Jordan in northern Palestine, and he was the person who got Prophet John (Peace be upon him) beheaded at the request and desire of a dancing girl.
Herod's third son, Philip, succeeded to the territories bounded on one side by river Yermuk and on the other by Mount Hermon. Philip had been much more deeply influenced by the Roman and Greek cultures than his father and brothers. Therefore the preaching of the truth could not have even so much effect in his land as it had in the other parts of Palestine.
In A.D. 41, the Romans appointed Herod Agrippa, the grandson of Herod the Great, ruler of the territories that had once been under Herod himself. Coming into power this man did whatever he could to persecute the followers of Prophet Jesus (Peace be upon him) and used aII the forces at his disposal to crush the movement that was functioning under the guidance of the Disciples to inculcate fear of God in the people and reform their morals.
In order to have a correct estimate of the condition of the common Jews and their religious leaders, one should study the criticisms levelled by Prophet Jesus on them in his sermons contained in the four Gospels. Even a religious man like Prophet John was beheaded before their eyes and not a voice was raised in protest against this barbarity. Then aII the religious leaders of the community unanimously demanded death sentence for Prophet Jesus, and none but a few righteous men were there to mourn this depravity. Above aII, when Pontius Pilate asked these depraved people, ' which condemned prisoner he should release, according to the custom, at Passover, Jesus or Barabbas the robber', they aII cried with one voice 'Barabbas'. This was indeed the last chance Allah gave to the Jews, and then their fate was sealed.
Not long after this, a serious conflict started between the Jews and the Romans, which developed into an open revolt by the former between A.D. 64 and G6. Both Herod Agrippa II and the Roman procurator Floris failed to put down the rebellion. At last, the Romans crushed it by a strong military action and in A.D. 70 Titus took Jerusalem by force. About 1,33,000 people were put to the sword, 67 thousand made slaves, and thousands sent to work in the Egyptian trines and to other cities so that they could be used in amphitheatres for being torn by wild beasts or become the "practice-target" for the sword fighters. AlI the tall and beautiful girls were picked out for the army of conquest and the Holy City of Jerusalem and the Temple were pulled down to the ground. After this the Jewish influence so disappeared from Palestine that the Jews could not regain power for two thousand years, and the Holy Temple could never be rebuilt.. Afterwards the Roman Emperor, Hadrian, restored Jerusalem but renamed it Aelia. The Jews, however, were not allowed to enter it for centuries. This was the calamity that the Jews suffered on account of their degeneration for the second time.
 

[And said], "If you do good, you do good for yourselves; and meaning in Urdu

دیکھو! تم نے بھلائی کی تو وہ تمہارے اپنے ہی لیے بھلائی تھی، اور برائی کی تو وہ تمہاری اپنی ذات کے لیے برائی ثابت ہوئی پھر جب دوسرے وعدے کا وقت آیا تو ہم نے دوسرے دشمنوں کو تم پر مسلط کیا تاکہ وہ تمہارے چہرے بگاڑ دیں اور مسجد (بیت المقدس) میں اُسی طرح گھس جائیں جس طرح پہلے دشمن گھسے تھے اور جس چیز پر ان کا ہاتھ پڑے اُسے تباہ کر کے رکھ دیں