'Eternity' in the Bible

You will not be united with them in burial because you have destroyed your land, you have killed your people. [The] descendants of evildoers will not be mentioned for eternity!

Have you not known, or have you not heard? Yahweh [is] the God of eternity, [the] creator [of] the ends of the earth! He is not faint, and he does not grow weary! There is no searching his understanding.

Israel is saved by Yahweh [with] everlasting salvation; you shall not be ashamed, and you shall not be humiliated {to all eternity}.