What does Joshua 22:5 mean?

But before anything happened, the Israelites sent Phinehas, son of Eleazar the priest, to talk to the tribes of Reuben, Gad, and the half-tribe of Manasseh in Gilead. Joshua 22:5 - Modern Text Bible

(Instead of attacking right away, they send a delegation led by Phinehas to find out what’s really going on.)