that the saying might be fulfilled which He spoke, “Of those whom You gave Me I have lost none — John 18:9, NKJV
(Jesus lost “None” of his disciples)

   Contradicted by:   

While I was with them in the world, I kept them in Your name. Those whom You gave Me I have kept; and none of them is lost except the son of perdition, that the Scripture might be fulfilled — John 17:12
(He lost only “One”)