Because
International Standard Bible Encyclopedia · James Orr and contributors
be-kos' (hina, "in order that"): "The multitude rebuked them, because (AV; the Revised Version (British and American) "that") they should hold their peace" (Mt 20:31).
Source of the article
International Standard Bible Encyclopedia — James Orr, general editor and contributors; CrossWire SWORD module ISBE 2.2
Bible Strong digital edition from CrossWire module 2.2; historical scholarship originally published in 1915