Isaiah 32:4 in the King James Version
The heart also of the rash shall understand knowledge, and the tongue of the stammerers shall be ready to speak plainly.
Context
3 The eyes of those who see will not be dim, and the ears of those who hear will listen.
4 The heart of the rash will understand knowledge, and the tongue of the stammerers will be ready to speak plainly.
5 The fool will no longer be called noble, nor the scoundrel be highly respected.