Jeremiah 15:19

Therefore, thus saith the Lord, in a gentle reproof of His servant, If thou return, turning from his course of discontent with the ways of the Lord, which had almost brought him to the point of doubting the faithfulness of God, then will I bring thee again, and thou shall stand before Me, so that he would once more occupy the right relation to Jehovah and accept His commands at His mouth; and if thou take forth the precious from the vile, carefully separating them, as an assayer does, and retaining only that which is good, the reference being to the need of letting the virtues of patience and trust govern all his actions instead of impatience and hastiness, thou shalt be as My mouth, the instrument through which the Lord makes known His will to men. Let them return unto thee, in yielding to his entreaties and begging him to intercede for them, but return not thou unto them, following their profane ways and causing himself to be led astray by them.