and followed the practices of the nations1 the LORD had driven out before them, as well as the practices that the kings of Israel had introduced.
References for 2 Kings 17:8
The Israelites secretly did things against the LORD their God that were not right. From watchtower to fortified city2 they built themselves high places in all their towns.
References for 2 Kings 17:9
They set up sacred stones3 and Asherah poles4 on every high hill and under every spreading tree.5
References for 2 Kings 17:10
At every high place they burned incense, as the nations whom the LORD had driven out before them had done. They did wicked things that provoked the LORD to anger.
They worshiped idols,6 though the LORD had said, "You shall not do this."
References for 2 Kings 17:12