# what was evil in the sight of Yahweh

"what was evil in Yahweh's judgment" or "what Yahweh considers to be evil". See 2 Kings 3:2. 

# He did not depart from the sins of Jeroboam son of Nebat

"Zechariah sinned as Jeroboam son of Nebat had sinned"

# Jeroboam son of Nebat

This Jeroboam was the first king of the ten northern tribes that made up the kingdom of Israel.

# who had caused Israel to sin

"who had caused the people of Israel to sin"