John 1

12 But as many as received him, to them he gave the right to become God’s children, to those who believe in his name: 13 who were born not of blood, nor of the will of the flesh, nor of the will of man, but of God. 

John 3

Now there was a man of the Pharisees named Nicodemus, a ruler of the Jews. 2 The same came to him by night, and said to him, “Rabbi, we know that you are a teacher come from God, for no one can do these signs that you do, unless God is with him.”

3 Jesus answered him, “Most certainly, I tell you, unless one is born anew,  he can’t see God’s Kingdom.”

4 Nicodemus said to 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?”

5 Jesus answered, “Most certainly I tell you, unless one is born of water and spirit, he can’t enter into God’s Kingdom. 6 That which is born of the flesh is flesh. That which is born of the Spirit is spirit. 7 Don’t marvel that I said to you, ‘You must be born anew.’ 8 The wind blows where it wants to, and you hear its sound, but don’t know where it comes from and where it is going. So is everyone who is born of the Spirit.” 

1 Peter 1

22 Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently, 23 having been born again, not of corruptible seed, but of incorruptible, through the word of God, which lives and remains forever.