Translation:

87. We gave Moses the Book and followed him up with a succession of Apostles; We gave Jesus the son of Mary clear (Signs) and strengthened him with the holy spirit. Is it that whenever there comes to you an Apostle with what ye yourselves desire not ye are puffed up with pride? Some ye called impostors and others ye slay!

Notes (Tafseer)

89. I understand "ransom them" here to mean "take ransom for them" though most of the Commentators take it to mean "give ransom for them". Mustafa had made a Pact which, if it had been faithfully observed by all parties, would have brought a reign of law and order for Medina. But some of the treacherous Jews never intended to observe its terms. They fought and slew each other and not only banished those who were obnoxious to them but intrigued with their enemies. If by chance they came back into their hands as captives, they demanded ransom for them to return to their homes although they had no right to banish them at all. If we understand by "ransom them" pay "ransom for them to release them from the hands of their enemies," it would mean that they did this pious act for show, although they were themselves the authors of their unlawful banishment. I think the former makes better sense.

90. As to the birth of Jesus, cf. xix. 16-34. Why is he called the "Son of Mary"? What are his "clear signs"? What is the "holy spirit" by which he was strenghtened? We reserve to a later state a discussion of the Quranic teaching on these questions. See iii. 62, n. 401.

91. Notice the sudden transition from the past tense in "some ye called imposters" to the present tense in "others ye slay." There is a double significance. First, reviewing the long course of Jewish history, we have come to the time of Jesus; they have often given the lie to God's Apostles, and even now they are trying to slay Jesus. Secondly, extending the review of that history to the time of Muhammad, they are even now trying to take the life of that holy Apostle. This would be literally true at the time the words were promulgated to the people. And this transition leads on naturally to the next verse, which refers to the actual conditions before Muhammad in Medina in the second year of the Hijra. Sections 11/13 (ii. 87-121) refer to the People of the Book generally, Jews and Christians. Even where Moses and the Law of Sinai are referred to, those traditions are common to both Jews and Christians. The argument is about the people who ought to have learnt from previous Revelations and welcomed Muhammad's teaching, and yet they both took up an attitude of arrogant rejection.