# added to the evil they had done in the sight of Yahweh

"continued doing what Yahweh said was evil" 

# in the sight of Yahweh

"according to Yahweh" 

# Ashtoreths

This is the plural of Ashtoroth, who was worshiped as a goddess in many different forms. See Judges 2:13

# They abandoned Yahweh and no longer worshiped him

"They completely stopped worshiping Yahweh" 

# They abandoned Yahweh

No longer obeying and worshiping Yahweh.