In those coming days (cf. Jeremiah 23:5), people would no longer talk about the mighty deliverance that Yahweh gave His people when He brought them out of Egypt into the Promised Land (cf. Jeremiah 16:14-15). Instead they would talk about the greater deliverance that He gave them when He brought them out of many countries (cf. Jeremiah 23:3; Jeremiah 16:14-18) into the Promised Land (cf. Isaiah 11; Ezekiel 34; Ezekiel 37). Again, the promises are clearly eschatological. This will happen at Jesus Christ"s second coming when He subdues His earthly enemies and Revelation -gathers the Jews to their land. [1] Amillennialists see the fulfillment happening in the return from exile and in the first advent of Christ. [2][source]
The section Jeremiah 21:1 to Jeremiah 23:8 dealt primarily with oracles against kings. Now the subject becomes the false prophets in Jerusalem ( Jeremiah 23:9-40). [source][source][source]