Isaiah 30:21 in the World English Bible
and when you turn to the right hand, and when you turn to the left, your ears will hear a voice behind you, saying, “This is the way. Walk in it.”
Context
20 And though the Lord give you the bread of adversity, and the water of affliction, yet shall not thy teachers be removed into a corner any more, but thine eyes shall see thy teachers:
21 And thine ears shall hear a word behind thee, saying, This is the way, walk ye in it, when ye turn to the right hand, and when ye turn to the left.
22 Ye shall defile also the covering of thy graven images of silver, and the ornament of thy molten images of gold: thou shalt cast them away as a menstruous cloth; thou shalt say unto it, Get thee hence.