John 6:65

65 And he added, "This is the very reason I told you that no people can come to me unless the Father makes it possible for them to do so."

John 6:65 In-Context

63 What gives life is God's Spirit; human power is of no use at all. The words I have spoken to you bring God's life-giving Spirit.
64 Yet some of you do not believe." (Jesus knew from the very beginning who were the ones that would not believe and which one would betray him.)
65 And he added, "This is the very reason I told you that no people can come to me unless the Father makes it possible for them to do so."
66 Because of this, many of Jesus' followers turned back and would not go with him any more.
67 So he asked the twelve disciples, "And you - would you also like to leave?"
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.