Jeremiah 42:4-7

4Then Jeremiah the prophet said unto them, I have heard you; behold, I will pray unto Jehovah your God according to your words; and it shall come to pass that whatsoever thing Jehovah shall answer you, I will declare it unto you; I will keep nothing back from you. 5Then they said to Jeremiah, Jehovah be a true and faithful witness amongst us, if we do not according to all the word wherewith Jehovah thy God shall send thee to us. 6Whether it be good, or whether it be evil, we will obey the voice of Jehovah our God, to whom we send thee; that it may be well with us, when we obey the voice of Jehovah our God.

7And it came to pass after ten days, that the word of Jehovah came unto Jeremiah.