# Jehoram walked in the ways of the kings of Israel

"Jehoram was an evil king, just as other kings of Israel who ruled before him had been" 

# as the house of Ahab was doing

"the same as the rest of the family of Ahab was doing" 

# for he had Ahab's daughter as his wife

Jehoram had married king Ahab's daughter.

# what was evil in Yahweh's sight

"what was evil in Yahweh's judgment" or "what Yahweh considers to be evil"