# But if our unrighteousness shows the righteousness of God, what can we say? Can we say that God is unrighteous to bring his wrath upon us?

"Some people say that since our unrighteousness shows God's righteousness, then God is unrighteous when he punishes us." 

# to bring his wrath upon us

"to bring his punishment upon us" or "to punish us" 

# I am using a human argument

"I am saying here what some people say"