The irony of government
It is a government's job to provide their subjects with essentials to live and support. However, in this text the government instead looks out for themselves and does not serve their subjects. For example, when the bullocks are killed for meat, the government promises it will go to the needy, but it instead goes to the privileged minority.
The irony of the clergy
Religion supposedly has the people's best interest at heart, however in this text organized religion is shown to be corrupted. For example, the people are told that the floods are a result of God's anger and their sins when it is really the religious authorities who are corrupted and sinful.
Irony of slaughter
Traditionally, sacrifice is seen as a symbol of devotion to God and is seen in many biblical stories as proving someone's faith. However, in this text, the slaughter of animals is shown to be brutal and violent.