The second chapter is written in poetic form. The language of this literary style is generally more figurative than straight prose. This does not mean we can take it less seriously, but it does mean that details may be more illustrative than concrete. The theme is what’s critical. In other words, the idea is to look at the forest, not the trees. The theme is God’s sovereignty in exposing sin and the people’s choice to accept sin’s exposure and repent or face exposure to conquest by a merciless enemy. Ultimately God sees at least some who rejected Him will return and be fully restored.
Hos 2:1 Say to your brothers, “You are my people,” and to your sisters, “You have received mercy.”
The literary siblings here, like the images of wife or children, represent groups of people close to the heart. The logical reference would be to Israel and Judah, respectively. In the Messianic sense these could be viewed as fellow believers, whether Jewish or Gentile, who have been brought into the family of God through the blood of Christ.