What does 2 Kings 17:4 mean?

But Hoshea tried to rebel by sending messengers to King So of Egypt and stopped paying tribute to Assyria. When the Assyrian king found out, he arrested Hoshea and put him in prison. 2 Kings 17:4 - Modern Text Bible

(Hoshea's attempt to break free from Assyria by seeking help from Egypt backfires, leading to his capture.)