# stood in his place

"stood where he was supposed to stand at the entrance to the temple"

# walk after Yahweh

"live obeying Yahweh" 

# his commandments, ... and his statutes

Together these words emphasize everything that Yahweh had commanded in the law. 

# with all his heart and all his soul

"with all his being" 

# that were written in this book

"that this book contained"