Antonyms for the word "most scriptural" include words like unscriptural, nonscriptural, heretical, false, and unethical. These words suggest a departure from accepted religious teachings and principles, and imply a lack of authenticity and trustworthiness. While most scriptural implies an adherence to religious texts and doctrines, its antonyms denote a disregard for them, or the promotion of alternative views and ideologies. Thus, it is important for individuals to choose their beliefs and sources of guidance carefully, ensuring that they align with their values and principles, and do not contradict established religious teachings.