This is kinda like the notion that a scientist can be purely logical without bias. I don't much doubt we all will have to eat our words one day, how we accused others of bias.
While I disagree with Dave L's use of "eternal", in that eternal can mean without end, as infinitely one direction, or eternal hereafter (at least in my understanding of the word)there is, nevertheless a reason most translators use "eternal" instead of a more literal use of the Greek. The same goes for the use of "eternal" in Hebrew, which comes from several different Hebrew words. It's not because the translators were careless, nor even necessarily because they too are biased.