After the death of Joshua - But from Jdg 1:1 to Jdg 2:9 is a consecutive narrative, ending with the death of Joshua. Hence, the events in this chapter and in Jdg 2:1-6 are to be taken as belonging to the lifetime of Joshua. See Jdg 2:11 note.
Asked the Lord - The phrase is only found in Judges and Samuel. It was the privilege of the civil ruler, to apply to the high priest to consult for him the Urim and Thummim (marginal reference). (Compare Jos 14:1; Jos 18:1, Jos 18:10; Jos 19:51). Here it was not Phinehas, as Josephus concludes from placing these events after the death of Joshua, but Eleazar, through whom the children of Israel inquired “who” (or, rather), “which tribe of us shall go up!”