And he called to him the multitude again (kai proskalesameno palin ton oclon). Aorist middle participle, calling to himself. The rabbis had attacked the disciples about not washing their hands before eating. Jesus now turned the tables on them completely and laid bare their hollow pretentious hypocrisy to the people. Hear me all of you and understand (akousate mou pante kai suniete). A most pointed appeal to the people to see into and see through the chicanery of these ecclesiastics. See on "Mt 15:11" for discussion.