Language is a 'big house' for every science, there is no single science that does not use language as an intermediary instrument including Law. Language in the field of law is used no more than a way to formulate laws and track fallacies. On the other hand, the language in the form of speech as a form of communication has never been seriously studied in the Law. This study focuses on language models of speech in verbal communication conducted by Investigators/Prosecutors with the public. The method used in this study is normative juridical based on secondary data in the form of primary legal materials, secondary legal materials, and tertiary legal materials obtained based on library research. Based on the normative juridical research method, we use several approaches, namely philosophical approaches, conceptual approaches, language approaches, participatory approaches, and case approaches. Based on this, spoken language in verbal communication has a psychological impact on ordinary people who
intersect with the law in the context of practice. This study propose several changes in Indonesian criminal procedural law.