'Old Man' in the Bible

And Zacharias said unto the angel, Whereby shall I know this? for I am an old man, and my wife well stricken in years.

knowing this, that our old man was crucified with him , that the body of sin might be done away, that so we should no longer be in bondage to sin;

that ye put away, as concerning your former manner of life, the old man, that waxeth corrupt after the lusts of deceit;

lie not one to another; seeing that ye have put off the old man with his doings,