1. The Gospel of Jesus Christ begins with the truth that all your sins were forever forgiven by God on the Cross of Jesus Christ (Mark 3:28; Colossians 1:20; 2 Corinthians 5:19). Everyone, believers and unbelievers alike, is forgiven of every single sin, past, present, and future (1 John 2:2). Only unbelief cannot be forgiven because rejecting Christ is rejecting the eternal life that is found only in Him (1 John 5:11). This is the difference between believers and unbelievers; both are forgiven but unbelievers do not have Christ's eternal life living in them (1 John 5:12b). Note: Institutional religion teaches conditional forgiveness; it says you must repent of your sins and believe before you are forgiven. But the Bible teaches that forgiveness happened one time on the Cross of Christ, not after you accept Christ as Savior (Hebrews 10:12,18). Forgiveness on the Cross is the reason that everyone is forgiven (Romans 6:10; Hebrews 2:9b). Forgiveness for everyone confuses many because of the false belief that forgiveness is the same thing as salvation. Salvation comes after forgiveness. Salvation is receiving a new heart and sharing Christ's eternal life for those who trust Him as Savior (John 3:16). Besides, repenting of your sins before you are given a new heart and the indwelling life of Christ is impossible.
2. The second half of the Gospel, the part that is often missed, is the offer of new life that is in Christ Jesus. When you trust Jesus as your Savior, God literally removes your old sinful inner nature and replaces it with a brand new heart (Romans 6:6; Ezekiel 36:26; Ezekiel 11:19). You become a completely new person on the inside; the old inner you is gone, dead and buried forever (2 Corinthians 5:17). You have been rescued from the domain of darkness and transferred into the kingdom of Jesus Christ (Colossians 1:13). Note: heart, spirit and inner nature all mean the same thing and are used interchangeably.
3. Since your new spirit is clean and without sin, it is a suitable dwelling place for the Spirit of God. Christ comes to live in you and joins His Spirit eternally as one to you (1 Corinthians 6:17). Because Christ now lives in you, you are forever free from sin in your born again heart (Romans 6:7,18,22). Your inner spirit is the real you, the part of you that will live on into eternity; your body is a temporary "earth suit" which will go to the grave when you die (2 Corinthians 4:7,16). Note: Christ living in you and the Holy Spirit living in you mean the same thing and are used interchangeably. ("Earth suit" was coined by the author Bill Gillham)
4. As a believer, you are now a righteous spiritual person (2 Peter 1:4; Romans 8:10b) living in a not-yet-righteous and not-yet-redeemed mortal body. Your "earth suit," which is your physical body and your mortal mind, is still dead because of sin (Romans 8:10a); it does not have the capacity to be righteous. But, in your born again heart, you can never sin because Christ in you can never sin (1 John 3:9). You can, however, still sin in your outer mortal body. This is the reason believers live by faith. Living by faith is letting Christ in you live out His righteous life through you (Galatians 2:20). As you follow Christ's life, you will experience a righteous and productive life. This new life will not be free of difficulties and heartaches as some teach, but Jesus will be there with you, and in you, every step of the way. Many are taught to try to live life by their own power; they miss experiencing the righteous life of Christ in them.
Here are some articles:
Are Believers Eternally Secure? Click Here
Are Believers Under the Law? Click Here
Are Believers Righteous? Click Here
Why Many Don't Experience a Righteous Life Click Here
Difference Between Law and Grace Click Here