Hosea 9:5

‘What will you do in the day of solemn assembly,

And in the day of the feast of YHWH?'

As there would be no offerings and sacrifices, what would they do on the day of solemn assembly, when, had they been at home, they would have gathered to worship and offer sacrifices? And what especially would they do when the feast of YHWH came around? (For the phrase ‘the feast of YHWH' see Leviticus 23:39). They would not only have lost their land, but also things that were at the very centre of their religious thought. They would not be rejoicing then.