# do not walk in your ways

"do not do the things you do" or "do not do what is just the way you do" 

# Appoint for us a king to judge us like all the nations

"Appoint for us a king like the kings of all the nations so that he can judge us" or "Appoint for us a king who will judge us the way the kings of the nations judge them". They wrongly believed that a king, and his sons after him, would rule justly.