When Soran left the Sea Temple.
The others treated him with a different attitude. In the past, the guards who did not even bother about him now bowed slightly in respect towards him. These were the fighters who served Gods. Their task was to protect the Sea Temple. Unless there was any special situation, only Naga Siren could mobilize them. These were the regular armed forces that belonged to the temple. Sometimes they would replace the local laws and act according to the rules of the temple.
Soran was now labeled with the Sea Temple's insignia.
Anyone who wanted to go against him would have to gauge the Sea Goddess' power. But with power came responsibility. If it was needed, Soran still needed to contribute to the Sea Temple.
The Sea Goddess would not have given him such a reward for no reason!