“Let anyone with ears
εἴ τις ἔχει ὦτα ἀκούειν, ἀκουέτω.
Here Mark repeats what he said earlier in this chapter 4:9. This warning was in all 3 synoptic gospels, in Matthew, chapter 13:8, and in Luke, chapter 8:8, and here. Jesus warned that anyone with ears to hear should listen (εἴ τις ὦτα ἀκούειν ἀκουέτω). Jesus often mentioned the importance of hearing and listening, something all of us should take heed.