John 3:2-4

²He came at night to where Jesus was and said, “Rabbi, we know you are a teacher who has come from God, for nobody could do the miraculous signs you're doing unless God was with him.”

³“I tell you the truth,” Jesus replied, “Unless you are reborn, you can't experience God's kingdom.”

⁴“How can you be reborn when you're old?” Nicodemus asked. “You can't go back into your mother's womb and be born a second time!”