He forsook the LORD God of his fathers, and did not walk in the way of the LORD.
2 Kings 21:22
Surrounding context
21:21 So he walked in all the ways that his father had walked; and he served the idols that his father had served, and worshiped them.
21:22 He forsook the LORD God of his fathers, and did not walk in the way of the LORD.
21:23 Then the servants of Amon conspired against him, and killed the king in his own house.