# put the crown on him

This is a symbolic act to show that they are making him king.

# gave him the covenant decrees

"presented to him the covenant decrees that he should obey". It is unclear if these decrees were a portion of the law of Moses, or a separate set of rules for kings to obey.      

# anointed him

This was a symbolic act to show that he was chosen by God to be the king. 

# Long live the king

"May the king live a long life"