Toxic

Toxic describes the nature of unaddressed moral compromise within a community — Paul's point is that spiritual and ethical corruption, like yeast, cannot be contained to one corner and will inevitably spread.

Toxic is applied here to the decorative elements of defeated idols — Moses argues that the attractive exterior of something spiritually contaminated does not make it safe to keep, because the harm is in the object's nature, not just its obvious function.

Toxic is used here to distinguish jealousy that is controlling and insecure from God's jealousy, which is appropriate given his total commitment — the point being that God's exclusive claim on loyalty isn't a character flaw.