'Longer' in the Bible

But Barzillai said to the king, “How much longer have I to live, that I should go up with the king to Jerusalem?

I am this day eighty years old. Can I [be useful to advise you to] discern between good and bad? Can your servant taste what I eat or drink? Can I still hear the voices of singing men and women? Why then should your servant be an added burden to my lord the king?

So Amasa went to summon [the fighting men of] Judah, but he delayed longer than the time which David had set for him.