Question: New Testament Antisemitism

The Gospel of John contains passages like 8:44, where Jesus, addressing the Jewish, tells them that "You are of your father, the devil." This has been used throughout history to justify antisemitism

Eternal Hell Question 1: Is heaven not forever, either?

Question (edited for space, clarity): If the word commonly translated “eternal/forever” for hell only means a limited age or long-lasting, but Jesus uses the same word (aionios) to describe not only Hell