# He walked in the ways of Asa, his father; he did not turn away from them

"He did things that were pleasing to Yahweh, like his father Asa had done, and he did not stop doing those things" 

# he did what was right in the eyes of Yahweh

"he did what Yahweh judged to be right" or "he did what Yahweh considered to be right". See 2 Chronicles 14:2.