let variable in emacs lisp

test_let_variable.el

(setq elephant "elephant form global")

(defun print-elephant ()
  (message elephant)
)

(defun test-let-variable ()
  (print-elephant)
  (message elephant)
  (let ((elephant "elephant from let"))
    (print-elephant)
    (message elephant))
  (print-elephant)
  (message elephant)
)

(print-elephant)
(test-let-variable)