then I will also cast away the offspring of Jacob, and of David my servant, so that I will not take of his offspring to be rulers over the offspring of Abraham, Isaac, and Jacob: for I will cause their captivity to be reversed and will have mercy on them.”
Jeremiah 33:24 “Don’t consider what this people has spoken, saying, ‘Has Yahweh cast off the two families which he chose?’ Thus they despise my people, that they should be no more a nation before them.”
Jeremiah 33:25 Yahweh says: “If my covenant of day and night fails, if I have not appointed the ordinances of heaven and earth;
Jeremiah 33:26 then I will also cast away the offspring of Jacob, and of David my servant, so that I will not take of his offspring to be rulers over the offspring of Abraham, Isaac, and Jacob: for I will cause their captivity to be reversed and will have mercy on them.”
The verse centers on "mercy", "cast", "away", "offspring", "jacob", "david", "servant", and "take". It is saying that the verse draws attention to "mercy" and "cast", so its meaning should be read from those terms before moving to application.
The prior verse says "Yahweh says If my covenant of day...", giving immediate footing for "mercy" and "cast". In Jeremiah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "mercy" and "cast" with trust shaped by these words, not by a vague optimism outside the passage.