Isaiah 32:4 in the World English Bible
The heart of the rash will understand knowledge, and the tongue of the stammerers will be ready to speak plainly.
Context
3 And the eyes of them that see shall not be dim, and the ears of them that hear shall hearken.
4 The heart also of the rash shall understand knowledge, and the tongue of the stammerers shall be ready to speak plainly.
5 The vile person shall be no more called liberal, nor the churl said to be bountiful.