“Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new.” [2 Corinthians 5:17]
“Now may the God of peace Himself sanctify you completely; and may your whole spirit, soul, and body be preserved blameless at the coming of our Lord Jesus Christ.” [1 Thessalonians 5:23]
A born again person is someone who has a direct connection with Almighty God by receiving the Holy Spirit inside their human spirit through faith in Jesus Christ. They are new creatures by the revolutionary change that takes place inside them when the Holy Spirit enters their spirit, and this permanent transformation establishes them as adopted children of God.
Before new birth, the conscience of the human is clouded and dark without God’s presence emblazing the holy standards of His Law upon it. This is revealed in Acts 2:37 as Peter presses the Jews with the criminal charge of breaking God’s Law by murdering the Messiah. “Now when they heard this, they were cut to the heart, and said to Peter and the rest of the apostles, ‘Men and brethren, what shall we do?’” This event verifies that from outside of an unbelieving person the dynamic power of the Holy Spirit slams the Law into the human spirit, and cuts into the conscience!
God’s Word explains this in Hebrews 4:12,13. “For the word of God is living and powerful, and sharper than any two-edged sword, piercing even to the division of soul and spirit, and of joints and marrow, and is a discerner of the thoughts and intents of the heart. And there is no creature hidden from His sight, but all things are naked and open to the eyes of Him to whom we must give account.”