A biblical prophet is not merely a covenant prosecutor but a covenant advocate. Both terms preserve the disputation (רִיב) metaphor, but the latter includes the prophetic role of comfort and encouragement. ("Prosecution" suggests the prophetic message is merely negative.)

Because the prophet "advocates" for the covenant, curse and blessing, judgment and salvation, and discipline and comfort are always at play.

The same prophet who declares, "woe to you," also proclaims "comfort, comfort my people," because of the prophetic mission to proclaim both conviction and consolation according to the covenant.

This fact is missed by many biblical interpreters who hear only judgment in the Hebrew prophets. It is also missed by that class of self-stylized modern prophet who approaches the role of prophecy as merely one of rebuke and condemnation of others.

To put it in more distinctly Christian terms: if your preaching does not convict, you have lost the need for the gospel. If your preaching does not comfort, you have lost its goal.