Hi Prophet David, the main person and event of the Gospel is our Lord and Savior Jesus Christ. It is His life that is central to the well being of fallen humanity. He is the then long awaited Messiah, who 'takes away the sin of the world.' This then becomes the main event of the Bible. The crucifixion and resurrection of our Savior whose Hebrew name is Yahshua Hamashiach.
He is the Alpha and the Omega! He is the "It is finished" deliverer of fallen humanity. He is the Second Adam who took back what the first Adam gave away.