Paul explaining what Jews do:
For you have heard of my former life in Judaism, how I persecuted the church of God violently and tried to destroy it; and I advanced in Judaism beyond many of my own age among my people, so extremely zealous was I for the traditions of my fathers.
Galatians 1:13-14
Jesus speaking to Jews:
You are of your father the devil, and your will is to do your father's desires. He was a murderer from the beginning, and has nothing to do with the truth, because there is no truth in him. When he lies, he speaks according to his own nature, for he is a liar and the father of lies.
John 8:44