Interrogation - Vine's Expository Dictionary of New Testament Words
Interrogation[ 1,,G1906, eperotema ]
primarily a question or inquiry, denotes a demand or appeal;" it is found in 1 Peter 3:21, RV, "interrogation" (AV, "answer"). See ANSWER, Note. Some take the word to indicate that baptism affords a good conscience, an appeal against the accuser.