The Gospel of Salvation can be given in just four parts.
The first one is God: "God that made the world and all things therein ... he is Lord of heaven and earth ... he giveth to all life, and breath, and all things; And hath made of one blood all nations of men for to dwell on all the face of the earth ... that they should seek the Lord" (Acts 17:24-27).
The Bible explains that God created us and sustains us and, therefore, has the right to absolute authority in our lives. Out of His love, He made us in His image so that we would seek to honor Him as the true Creator. He is a holy, just and loving God.
The next one is Man, "The LORD looked down from heaven upon the children of men, to see if there were any that did understand, and seek God." (Psalm 14:2).