'Old' in the Bible

Nicodemus said to him, "How can a man be born when he is old? He cannot enter his mother's womb and be born a second time, can he?"

Then the Judeans replied, "You are not yet fifty years old! Have you seen Abraham?"

I tell you the solemn truth, when you were young, you tied your clothes around you and went wherever you wanted, but when you are old, you will stretch out your hands, and others will tie you up and bring you where you do not want to go."