2 Kings 18:9
In the fourth year of Hezekiah's reign, which was the seventh year of the reign of Hoshea son of Elah over Israel, Shalmaneser king of Assyria marched against Samaria and besieged it.

three years

2 Kings 25:1-3
So in the ninth year of Zedekiah's reign, on the tenth day of the tenth month, King Nebuchadnezzar of Babylon marched against Jerusalem with his entire army. They encamped outside the city and built a siege wall all around it. . . .

Jeremiah 52:4, 5
So in the ninth year of Zedekiah's reign, on the tenth day of the tenth month, King Nebuchadnezzar of Babylon marched against Jerusalem with his entire army. They encamped outside the city and built a siege wall all around it. . . .