'Old' in the Bible

And not being feeble in faith though his body seemed to him little better than dead (he being about a hundred years old) and Sarah was no longer able to have children:

Being conscious that our old man was put to death on the cross with him, so that the body of sin might be put away, and we might no longer be servants to sin.

But now we are free from the law, having been made dead to that which had power over us; so that we are servants in the new way of the spirit, not in the old way of the letter.