John 6:61-69 Common English Bible (CEB)
61 Jesus knew that the disciples were grumbling about this and he said to them, “Does this offend you? 62 What if you were to see the Human One[a] going up where he was before? 63 The Spirit is the one who gives life and the flesh doesn’t help at all. The words I have spoken to you are spirit and life. 64 Yet some of you don’t believe.” Jesus knew from the beginning who wouldn’t believe and the one who would betray him. 65 He said, “For this reason I said to you that none can come to me unless the Father enables them to do so.” 66 At this, many of his disciples turned away and no longer accompanied him.
67 Jesus asked the Twelve, “Do you also want to leave?”
68 Simon Peter answered, “Lord, where would we go? You have the words of eternal life. 69 We believe and know that you are God’s holy one.”