Jeremiah 33:1-3

Moreover the word of Jehovah came unto Jeremiah the second time, while he was yet shut up in the court of the guard, saying, Thus saith Jehovah that doeth it, Jehovah that formeth it to establish it; Jehovah is his name: Call unto me, and I will answer thee, and will show thee great things, and difficult, which thou knowest not.