John 3:4
Nicodemus says to him; How is a man able to be born, being old? whether he is able to enter the second time into the womb of his mother, and be born?
John 3:3
Jesus responded and said to him, Truly, truly, I say unto thee, unless any one may be born from above, he is not able to see the kingdom of God.
John 4:11-12
The woman says to Him, Sir, thou hast no windlass, and the well is deep: whence hast thou living water?
John 6:53
Then Jesus said unto them, Truly, truly, I say unto you, Unless you may eat the flesh of the Son of man and drink His blood, you have no life in you.
John 6:60
Then many of His disciples, hearing, said, This is a hard sermon; who is able to hear it?
1 Corinthians 1:18
For the word of the cross is foolishness indeed to those who are lost; but to those who are saved it is the power of God.
1 Corinthians 2:14
But the intellectual man receives not the things of the Spirit of God; for they are foolishness unto him; and he is not able to know them, because they are spiritually discerned.