John 6:63-65

63It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and they are life.

64But there are some of you who do not believe.” For Jesus knew from the beginning who they were who did not believe, and who would betray Him.

65And He said, “Therefore I have said to you that no one can come to Me unless it has been granted to him by My Father.”