# May his name endure forever

"May people always know about him" or "May people never forget who he is" 

# his name

"the king's name" or "the king's reputation" or "the king's fame" 

# as long as the sun

"as long as the sun endures" or "as long as the sun shines" 

# may people be blessed in him

"may God cause him to do good things for people" 

# call him blessed

"recognize that God has blessed them"