The term 'Hand-on-Bible Ritual' refers to a practice in which a person places their hand on a Bible and swears an OATH. This ritual is often used in legal proceedings, such as court cases, to affirm that the person is telling the truth. It is also used in other contexts, such as when taking an OATH of office or making a solemn promise. The word 'OATH' is four letters long and is the answer to the crossword puzzle.