Miss Watson telling Huck to pray. Huck believes it is ineffective and it does nothing for him; he believes it doesn't apply to his life.
Huck thinking about Pap Finn, his father, and how he was always getting drunk and abusing Huck. He thinks about the dead body and how it looked like Pap Finn.
Huck and Tom Sawyer talking about Tom Sawyer's Gang and how Tom believes Huck is a "perfect sap-head". Verbal Irony is present during this scene because Tom is being sarcastic when he calls him a perfect child. The theme is that Huck believes the gang is not effective and he should listen to the Widow and Miss Watson.