'Know' in the Bible

and her children I will kill in death, and know shall all the assemblies that I am he who is searching reins and hearts; and I will give to you -- to each -- according to your works.

'And to you I say, and to the rest who are in Thyatira, as many as have not this teaching, and who did not know the depths of the Adversary, as they say; I will not put upon you other burden;

'Remember, then, how thou hast received, and heard, and be keeping, and reform: if, then, thou mayest not watch, I will come upon thee as a thief, and thou mayest not know what hour I will come upon thee.

lo, I make of the synagogue of the Adversary those saying themselves to be Jews, and are not, but do lie; lo, I will make them that they may come and bow before thy feet, and may know that I loved thee.