I'm assuming Harald will refuse the request to kill Rocks (maybe because Loki overhears it and begs him not to do it), which is what pic related is referring to?
We'll probably meet the Gods Knights next chapter, when they go to Elbaf to pass on the Gorosei's message. And because Harald doesn't complete his mission, Elbaf doesn't become an affiliated country, which is why the Gods Knights are pissed at him in the current day because they wouldn't have had to exert themselves if Harald had just killed Rocks like he was asked.