Which prophet is known for addressing the concept of spiritual adultery?

The prophet known for addressing the concept of spiritual adultery is Hosea. His prophetic ministry is particularly focused on the theme of infidelity, using the metaphor of marriage to illustrate Israel's unfaithfulness to God. Hosea's relationship with his unfaithful wife, Gomer, serves as a powerful symbol of God's relationship with Israel, who is depicted as having turned away from Yahweh to pursue other gods.

Hosea's vivid imagery illustrates the seriousness of depending on foreign alliances and idolatries, effectively portraying these actions as acts of spiritual adultery. He calls the people to repentance, emphasizing God's consistent love and desire for reconciliation despite their transgressions. The book of Hosea not only forewarns of impending judgment but also highlights the hope for restoration, demonstrating the depth of God's commitment to His covenant people, even in the face of their infidelity.

The other prophets, while they may touch upon themes of unfaithfulness or call for fidelity to God, do not focus as intensely on the metaphor of marital unfaithfulness and spiritual adultery as Hosea does.