Jeremiah 15:19 in the World English Bible
Therefore the LORD says, “If you return, then I will bring you again, that you may stand before me; and if you take out the precious from the vile, you will be as my mouth. They will return to you, but you will not return to them.
Context
18 Why is my pain perpetual, and my wound incurable, which refuseth to be healed? wilt thou be altogether unto me as a liar, and as waters that fail?
19 Therefore thus saith the LORD, If thou return, then will I bring thee again, and thou shalt stand before me: and if thou take forth the precious from the vile, thou shalt be as my mouth: let them return unto thee; but return not thou unto them.
20 And I will make thee unto this people a fenced brasen wall: and they shall fight against thee, but they shall not prevail against thee: for I am with thee to save thee and to deliver thee, saith the LORD.