Jeremiah 30:7

Jacob : the second so of a pair of twins born to Isaac and Rebeccaa; ancestor of the 12 tribes of Israel,the nation of Israel,a person, male,son of Isaac; Israel the man and nation

Jeremiah 51:6

Babylon : a country of Babylon in lower Mesopotamia
(32° 32´, 44° 25´); (32° 32´, 44° 25´); (32° 32´, 44° 25´); (30° 57´, 46° 6´)