You must be born again

"Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God." John 3:3

"Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God. 

That which is born of the flesh is flesh; and that which is born of the Spirit is spirit. 

Marvel not that I said unto thee, Ye must be born again.

The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is everyone that is born of the Spirit." John 3:5-8

"And if Christ be in you, the body is dead because of sin; but the Spirit is life because of righteousness. 

But if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead shall also quicken your mortal bodies by his Spirit that dwelleth in you." Romans 8:10-11

"For as many as are led by the Spirit of God, they are the sons of God." Romans 8:14