John 6:61-65

BLB(i) 61 But Jesus, knowing in Himself that His disciples are grumbling about this, said to them, “Does this offend you? 62 Then what if you should see the Son of Man ascending to where He was before? 63 It is the Spirit giving life; the flesh profits nothing. The words that I speak to you are spirit and they are life. 64 But there are some of you who do not believe.” (For Jesus knew from the beginning who are those not believing, and who it is who will betray Him.) 65 And He was saying, “Because of this, I have said to you that no one is able to come to Me, unless it shall have been granted to him from the Father.”