Why did people respect Poseidon?

People respected Poseidon, the Greek god of the sea, earthquakes, and horses, due to his immense power and influence over vital aspects of life and nature. As the god of the sea, he was crucial for navigation, fishing, and trade, making him a protector of sailors and their livelihoods. Additionally, his ability to cause earthquakes instilled both fear and reverence, as he could bring destruction at will. Worship and offerings were made to gain his favor, ensuring safe voyages and bountiful harvests from the ocean.