'Old' in the Bible

Nicodemus said to him, "How can a man be born [when he] is an old man? He is not able to enter into his mother's womb for the second time and be born, [can he]?"

So the Jews said to him, "{You are} not yet fifty years [old], and have you seen Abraham?"

Truly, truly I say to you, when you were young, you tied [your clothes] around yourself and walked wherever you wanted. But when you grow old, you will stretch out your hands, and someone else will tie you up and carry [you] where you do not want [to go].