The Gospel is the good news that Jesus Christ died for our sins, was buried, and rose again the third day according to the scriptures (1 Corinthians 15:3-4 KJV).
For all have sinned, and come short of the glory of God (Romans 3:23 KJV). But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us (Romans 5:8 KJV). For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord (Romans 6:23 KJV).
That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved (Romans 10:9 KJV).