Paul is shaming the Corinthians for acting like they do not know. Alternate translation: "You act as though you do not know that God's holy people will judge the world." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Because they will be given greater responsibility later, they should be responsible for lesser things now. Alternate translation: "You will judge the world in the future, so you should be able to settle this small matter now." (See: [[rc://en/ta/man/translate/figs-rquestion]])