Read Jeremiah 40:3 Using Other Translations
Now the LORD hath brought it, and done according as he hath said: because ye have sinned against the LORD, and have not obeyed his voice, therefore this thing is come upon you.
The LORD has brought it about, and has done as he said. Because you sinned against the LORD and did not obey his voice, this thing has come upon you.
just as he said he would. For these people have sinned against the LORD and disobeyed him. That is why it happened.