John 3:4
Nicodemus saith unto him, How can a man be born when he is old? can he enter a second time into his mother's womb, and be born?
John 3:3
Jesus answered and said unto him, Verily, verily, I say unto thee, Except one be born anew, he cannot see the kingdom of God.
John 4:11-12
The woman saith unto him, Sir, thou hast nothing to draw with, and the well is deep: whence then hast thou that living water?
John 6:53
Jesus therefore said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man and drink his blood, ye have not life in yourselves.
John 6:60
Many therefore of his disciples, when the heard this , said, This is a hard saying; who can hear it?
1 Corinthians 1:18
For the word of the cross is to them that perish foolishness; but unto us who are saved it is the power of God.
1 Corinthians 2:14
Now the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him; and he cannot know them, because they are spiritually judged.