Easton's Bible Dictionary
This change is ascribed to the Holy Spirit. It originates not with man but with God (John 1:12,13; 1 John 2:29; 5:1,4 ).
As to the nature of the change, it consists in the implanting of a new principle or disposition in the soul; the impartation of spiritual life to those who are by nature "dead in trespasses and sins."
The necessity of such a change is emphatically affirmed in Scripture (John 3:3; Romans 7:18; 8:7-9; 1 Corinthians 2:14; Ephesians 2:1; 4:21-24 ).
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain.
Easton, Matthew George. Entry for 'Regeneration'. Easton's Bible Dictionary. https://www.studylight.org/dictionaries/eng/ebd/r/regeneration.html. 1897.