“Tertullians Apology underlined the legal and moral absurdity of the persecution directed against Christians. Some of his other books offered encouragement to those facing martyrdom. He attacked the heretics, explained the Lord’s Prayer and the meaning of baptism, and helped develop the orthodox understanding of the Trinity. He was the first person to use the Latin word trinitas (trinity).… His intellectual brilliance and literary versatility made him one of the most powerful writers of the time.”