ap-re-hend': Occurs in the New Testament in two meanings: "to arrest" (piazo; Ac 12:4; 2Co 11:32 the Revised Version (British and American), "take"); and "to seize," "grasp," "take into one's possession," "attain," "inquire eagerly" (katalambano, the American Standard Revised Version "laid hold on," "laid fast hold of," Php 3:12-13; Eph 3:18). In Joh 1:5, "The darkness apprehended it not," the Revised Version, margin gives "overcame not."
⇒See the definition of apprehend in the KJV Dictionary
See COMPREHEND.