And I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh.

— Ezekiel 3626

He saved us, not because of works done by us in righteousness, but according to his own mercy, by the washing of regeneration and renewal of the Holy Spirit, whom he poured out on us richly through Jesus Christ our Savior, so that being justified by his grace we might become heirs according to the hope of eternal life.

— Titus 35-7

Jesus answered him, Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God. 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? Jesus answered, Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God. That which is born of the flesh is flesh, and that which is born of the Spirit is spirit. Do not marvel that I said to you, You must be born again.

— John 33-7

Therefore, if anyone is in Christ, he is a new creation. The old has passed away behold, the new has come.

— 2 Corinthians 517