Read the introduction (and more if you want!) of God is the Gospel by John Piper here.  It is amazing! A few stand out quotes to me were:

When I say that God is the Gospel I mean that the highest, best, final, decisive good of the gospel, without which no other gifts would be good, is the glory of God in the face of Christ revealed for our everlasting enjoyment. The saving love of God is God's commitment to do everything necessary to enthrall us with what is most deeply and durably satisfying, namely himself. Since we are sinners and have no right and no desire to be enthralled with God, therefore God's love enacted a plan of redemption to provide that right and that desire. The supreme demonstration of God's love was the sending of his Son to die for our sins and to rise again so that sinners might have the right to approach God and might have the pleasure of his presence forever.

The critical question for our generation--and for every generation--is this: If you could have heaven, with no sickness, and with all the friends you ever had on earth, and all the food you ever liked, and all the leisure activities you ever enjoyed, and all the natural beauties you ever saw, all the physical pleasures you ever tasted, and no human conflict or any natural disasters, could you be satisfied with heaven, if Christ were not there?