MMM-mode or more than one major mode, is a way of embedding various modes inside emacs! Very cool!
(use-package mmm-mode
:config
(setq mmm-global-mode 'maybe)
(mmm-add-classes
'((embedded-elisp
:submode emacs-lisp
:face mmm-declaration-submode-face
:front ".*#\\+BEGIN_SRC .*emacs-lisp.*"
:back ".*#\\+END_SRC.*")))
(mmm-add-mode-ext-class 'org-mode ".*org.*" 'embedded-elisp))