Dictionary:

commination

  (kŏm'ə-nā'shən)

A formal denunciation.

[Middle English comminacioun, from Latin comminātiō, comminātiōn-, from comminātus, past participle of comminārī, to threaten : com-, intensive pref.; see com– + minārī, to threaten; see menace.]

The noun has 2 meanings:

Meaning #1: prayers proclaiming God's anger against sinners; read in the Church of England on Ash Wednesday

Meaning #2: a threat of divine punishment or vengeance