Regeneration

only found in Matt. 19:28 and Titus 3:5. This word literally
means a "new birth." The Greek word so rendered (palingenesia)
is used by classical writers with reference to the changes
produced by the return of spring. In Matt. 19:28 the word is
equivalent to the "restitution of all things" (Acts 3:21). In
Titus 3:5 it denotes that change of heart elsewhere spoken of as
a passing from death to life (1 John 3:14); becoming a new
creature in Christ Jesus (2 Cor. 5:17); being born again (John
3:5); a renewal of the mind (Rom. 12:2); a resurrection from the
dead (Eph. 2:6); a being quickened (2:1, 5).

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; Rom. 7:18; 8:7-9; 1 Cor. 2:14; Eph. 2:1;
4:21-24).