I believe you are referring to the book of John in the bible
the book of john cautions against syncretism of christian religion and the holding of doctrines that are heretical.
syncretism is the mixing of various views into a culture or religion, that was spreading quickly in the early church.
He’s goal was not to fight but to inform the German emperor in the sternest way possible short of war that Germany's actions were unacceptable and risked a confrontation. Germany ignored the threat.
The oldest known peace treaty was the Egyptian-Hittite peace treaty. It is also known as Eternal treaty or Silver treaty. The treaty was signed between Hittite empire and Egypt in 1258 BC after the long war, which continued for over 2 centuries. After the Battle of Kadesh in 1274 BC, the sides sought a peace treaty because of heavy casualties on both sides. And it was ratified 16 years later that battle.
Answer:
Caesar Augustus
Caesar Augustus brought a peace to the Roman Empire that endured long after his death. Caesar Augustus was one of ancient Rome’s most successful leaders who led the transformation of Rome from a republic to an empire. During his reign, Augustus restored peace and prosperity to the Roman state and changed nearly every aspect of Roman life.