All sins of all people were forgiven for all time on the Cross of Jesus Christ, except for the sin of unbelief that Christ is Savior. This single sin of rejecting Christ is the barrier that people place before God and His free offer of salvation unto eternal life through faith in Christ Jesus. When you trust in Christ as Savior (that is, when you turn unbelief into belief - repentance), God removes your old sinful spirit (heart) and replaces it with a brand new, clean heart. The Holy Spirit comes to live in your new heart to make you literally righteous by His indwelling presence as He joins as one with you in spirit. Whereas your inner spirit is redeemed and righteous, your outer mortal body has not yet been redeemed. Thus, your spirit is alive because of righteousness but your body is still dead because of sin. This means that the Christian life is living in union with Christ in your spirit and following Him by faith in your mortal body and human soul (human thoughts and emotions). Christ lives His righteous life through you, and you trust Him and follow Him in faith.

To find out more why this definition of the Gospel is really what the Bible teaches Click Here
To learn more about the 5 essential truths of the Gospel, Click Here
Excellent Online Booklet "The Gospel of Jesus Christ - Simplified" Click Here