What was the purpose of a large number of divination activities in Shang Dynasty?

When the bronze civilization reached its peak, people's worship of gods, ancestors and the dead also reached its peak. The supreme god "Emperor" ruled everything, and the Shang king ruled on his behalf. A large number of divination activities are aimed at obtaining the will of emperors and ancestors, and a large number of Oracle Bone Inscriptions are left in Oracle Bone Inscriptions.