John 3:4
Nicodemus saith to him, How can a man be born when he is old? Can he enter his mothers womb a second time, and be born?
John 3:3
Jesus answered and said to him, Truly, truly do I say to thee, Unless a man be born again, he cannot see the kingdom of God.
John 4:11-12
The woman saith to him, Sir, thou hast nothing to draw with, and the well is deep. Whence hast thou the living water?
John 6:53
Jesus therefore said to them, Truly, truly do I say to you, Unless ye eat the flesh of the Son of man and drink his blood, ye have no life in you.
John 6:60
Many therefore of his disciples, when they heard this, said, This teaching is hard; who can listen to it?
1 Corinthians 1:18
For the preaching of the cross is to those who are perishing, foolishness, but to us who are being saved, it is the power of God.
1 Corinthians 2:14
But the unspiritual man receiveth not the things of the Spirit of God; for they are foolishness to him, and he cannot know them; because they are spiritually discerned.