What does Amos 9:5 mean?

The Lord God of armies touches the earth, and it melts, and everyone who lives there mourns. The whole land rises and falls like the Nile, then sinks again like Egypt's river. Amos 9:5 - Modern Text Bible

(God's power is so great that when he acts, the whole earth trembles and mourns, just like the Nile's flooding and receding.)