They left God, who saved them from Egypt. They followed other gods of the people around them. They got down to those gods. This made God mad. ββοΈ β‘οΈ
Thus they forsook the LORD, the God of their fathers, who had brought them out of the land of Egypt, and they followed after various gods of the peoples around them. They bowed down to them and provoked the LORD to anger,
KJV
And they forsook the LORD God of their fathers, which brought them out of the land of Egypt, and followed other gods, of the gods of the people that [were] round about them, and bowed themselves unto them, and provoked the LORD to anger.
ASV
and they forsook Jehovah, the God of their fathers, who brought them out of the land of Egypt, and followed other gods, of the gods of the peoples that were round about them, and bowed themselves down unto them: and they provoked Jehovah to anger.