from 1909 and 1097; to know upon some mark, i.e. recognize; by implication, to become fully acquainted with, to acknowledge:

KJV-- (ac-, have, take) know (-ledge, well), perceive.

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1909 epi (ep-ee');

a primary preposition; properly, meaning superimposition (of time, place, order, etc.), as a relation of distribution [with the genitive case], i.e. over, upon, etc.; of rest (with the det.) at, on, etc.; of direction (with the accusative case) towards, upon, etc.:

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1097 ginosko (ghin-oce'-ko);

a prolonged form of a primary verb; to "know" (absolutely) in a great variety of applications and with many implications (as follow, with others not thus clearly expressed):

KJV-- allow, be aware (of), feel, (have) know (-ledge), perceived, be resolved, can speak, be sure, understand.