The consequence for the people's actions is a violent and complete removal from their familiar homeland into a harsh reality of total alienation and servitude. God will cast the people out of their land with immense force, similar to how unwanted cargo is hurled off a ship. They will be driven into a completely foreign territory, a place neither they nor their ancestors have ever known.
In this unfamiliar land, they will face the curse of serving foreign gods. The primary approach among commentators is that this does not necessarily refer to religious worship. Rather, it points to physical slavery, as they will be subjugated to nations that practice idolatry [רש״י, רד״ק]. Alternatively, this can be seen as a direct, measure for measure punishment. Because the people freely and willingly chose to worship idols in their homeland to anger God, they will now be forced to engage in idolatry against their will in exile [מלבי״ם]. A complementary perspective suggests that living under the absolute control of an idolatrous society will inevitably cause the exiles' own lifestyle and worldview to become idolatrous [ביאור שטיינזלץ].
This grueling existence will continue day and night, offering no moment of rest. God declares that He will withhold all mercy and favor from them. Practically, this means God will not allow the captives to find grace in the eyes of their captors. As a result, their enemies will show them no pity, forcing them into relentless labor without a pause [מצודת דוד, רד״ק]. Furthermore, this absence of mercy signifies that they will receive no heavenly intervention or divine assistance from God to ease their profound suffering [ביאור שטיינזלץ].