What happened to the previous scriptures?

(4:46)

Among those who are jews, there are some who displace words from (their) right places and say: “We hear your word (O Muhammad (PBUH)) and disobey,” and “Hear and let you (O Muhammad (PBUH) _) “hear nothing.” And Raina with a twist of there tongues and as a mockery of the religion (Islam) And if only they had said: “We hear and obey”, And “Do make us understand,” it would have been better for them, and more proper; but Allah has cursed them for their disbelief, so they believe not except a few.

(5:13)

So because of their breach of their covenant, We cursed them and made their hearts grow hard. They change the words from their (right) places and have abandoned a good part of the Message that was sent to them. And you will not cease to discover deceit in them, except a few of them. But forgive them and overlook (their misdeeds).

Verily, Allah loves Al-Muhsinun (good-doers).