Calling & new birth

You must be born again — a new heart and a new spirit.

Jesus replied, “Truly, truly, I tell you, no one can see the kingdom of God unless he is born again.” “How can a man be born when he is old?” Nicodemus asked. “Can he enter his mother’s womb a second time to be born?” Jesus answered, “Truly, truly, I tell you, no one can enter the kingdom of God unless he is born of water and the Spirit. Flesh is born of flesh, but spirit is born of the Spirit. Do not be amazed that I said, ‘You must be born again.’ The wind blows where it wishes. You hear its sound, but you do not know where it comes from or where it is going. So it is with everyone born of the Spirit.”
John 3:3–8

I will give you a new heart and put a new spirit within you; I will remove your heart of stone and give you a heart of flesh. And I will put My Spirit within you and cause you to walk in My statutes and to carefully observe My ordinances.
Ezekiel 36:26–27

But because of His great love for us, God, who is rich in mercy, made us alive with Christ even when we were dead in our trespasses. It is by grace you have been saved!
Ephesians 2:4–5

“No one can come to Me unless the Father who sent Me draws him, and I will raise him up at the last day.
John 6:44

He saved us, not by the righteous deeds we had done, but according to His mercy, through the washing of new birth and renewal by the Holy Spirit.
Titus 3:5

For you have been born again, not of perishable seed, but of imperishable, through the living and enduring word of God.
1 Peter 1:23

For God, who said, “Let light shine out of darkness,” made His light shine in our hearts to give us the light of the knowledge of the glory of God in the face of Jesus Christ.
2 Corinthians 4:6