The major source of Western Morality is ancient Greece. Their Military, social structure, laws and society created the bedrock that Rome then modified and passed on to medieval Europe. Greece in turn borrowed from their predecessors as well especially Sumerian and Akkadian cultures.
In particular a man named Solon from Athens was instrumental in organizing a written constitution, articulating equal rights for all, the right of the citizen to defend themselves and protect their property, standards of ethics, morality , etc. There was written the 10 tenants or commandments of Solon, which were spread throughout the ancient Greek World.
From these sources sprang the roots of western morality and ethics, and the basis for Western system of Government and Justice system, ethics and morals.
what the Bible did was distribute morality as it was one of the most widely copied books in history, and spread throughout empires.
