Date and Place: written in Palestine about 685-616 B.C.
Proof of authorship: This is the first Book in the Bible which critics have not attacked regarding authorship.
Theme: the prophecy of Jeremiah might be considered the great book on back-sliding and the dangers of apostasy. Apart from this only one other book even mentions the word back-sliding [Hosea 4:16; Hosea 11:7; Hosea 14:4].
Jeremiah uses it 13 times [Jer. 2:19; Jer. 3:6-22; Jer. 5:6; Jer. 8:5; Jer. 14:7; Jer. 31:22; Jer. 49:4].
He was the first prophet having continuous open warfare with his people. His theme seems to be that of judgment without mercy with those who become apostates and defy God.
His messages repeatedly refer to immediate Babylonian captivity, the return of Israel after 70 years, another world-wide dispersion, a final regathering of Israel at the end of this age, and the reign of Messiah over Israel forever [Jer. 3:14-25; Jer. 7:1-7; Jer. 16:14-21; Jer. 17:21-26; Jer. 23:3-8; Jer. 30:1-31:40; Jer. 32:37-33:26].
Purpose: to make clear to Israel the consequences of sin and apostasy: to reveal to them their own future in the plan of God for man; and to emphasize the fact that the destiny of every man is determined by his conformity or lack of conformity to God and His plan.
– Dake A.R.B. : Page 800