Chapter 57 is a reference to the Bible, specifically the book of Isaiah. The crossword solutions for this term are SNIPES, which is a type of bird, and LVII, which is the Roman numeral for 57. SNIPES are a type of wading bird found in wetlands, marshes, and other wetland habitats. They have long legs and a long bill, and they feed on insects, crustaceans, and other small animals. LVII is the Roman numeral for 57, which is the number of the chapter in the book of Isaiah.