# his house

This refers to God's temple

# For why should his wrath come upon the kingdom of the king and his sons?

"For we do not want God's wrath to come upon the kingdom of the king and his sons." or "For if you do not do these things, God's wrath will come upon the kingdom of the king and his sons." 

# For why should his wrath come upon the kingdom of the king and his sons

"For why should God punish the kingdom of the king and his sons" or "For if you do not do these things, God will punish the kingdom of the king and his sons" 

# the kingdom of the king and his sons

"my and my sons' kingdom"