βλέποντες οὐ βλέπουσιν καὶ ἀκούοντες οὐκ ἀκούουσιν.

βλέποντες οὐ βλέπουσιν

καὶ ἀκούοντες οὐκ ἀκούουσιν.

While seeing, they are not seeing, and while hearing, they are not hearing.