The imagery of 'her face' and 'her breasts' isn't just about hidden sin, but about sin displayed for all to see.
Hosea 2:2 uses striking physical imagery to describe Israel's spiritual adultery: 'let her put away her whoring from her face, and her adultery from between her breasts.' This language points to the brazen and public nature of their idolatry.
Sin on Display
The 'face' was often seen as the seat of expression, shame, or shamelessness. To have 'whoring from her face' suggests an unblushing, open display of sin, like a harlot using her appearance to lure others. It wasn't a hidden sin, but one that marked her very demeanor.
Alluring and Exposed Sin
Similarly, 'adultery from between her breasts' evokes images of a prostitute exposing or adorning herself to attract lovers. The breasts could represent intimacy or the core of one's affections. Here, it signifies that the very heart of Israel's devotion and desires had become entangled with forbidden 'lovers' – false gods and illicit practices.