John 3:7
KJV
Marvel not that I said unto thee, Ye must be born again.
NRSV
Do not be astonished that I said to you, ‘You must be born from above.’
In the King James Bible, “thee” is a singular form of “you” – referencing one person. “Ye” is a plural form of “you” – referencing more than one person.
Scripture quotations marked (NRSV) are from the New Revised Standard Version Bible, copyright © 1989 National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved worldwide.