“After this the Bishop says, Holy things for holy men Ib. § 19..”  Chrysostom explains this as being both an invitation to the Faithful in general to communicate, and a warning to the unholy to withdraw.  “The Bishop, with loud voice and awe-inspiring cry, raising high his arm like a herald, and standing on high in sight of all, above that awful silence cries aloud, inviting some and repelling others, and doing this not with his hand, but with his tongue more clearly than with the hand..…For when he says, Holy things for the holy, he means this:  Whosoever is not holy, let him not draw near Hom. xvii. in Hebr.  These Homilies were edited after Chrysostom’s death..”