What does Jeremiah 29:13 mean?

For Yahweh says, “After seventy years are accomplished for Babylon, I will visit you and perform my good word toward you, in causing you to return to this place.

For I know the thoughts that I think toward you,” says Yahweh, “thoughts of peace, and not of evil, to give you hope and a future.

You shall call on me, and you shall go and pray to me, and I will listen to you.

I will be found by you,” says Yahweh, “and I will turn again your captivity, and I will gather you from all the nations, and from all the places where I have driven you, says Yahweh. I will bring you again to the place from where I caused you to be carried away captive.”

Because you have said, “Yahweh has raised us up prophets in Babylon;”

Yahweh says concerning the king who sits on David’s throne, and concerning all the people who dwell in this city, your brothers who haven’t gone with you into captivity;