In the immortal words of Samuel L. Jackson in "Jurassic Park" - "Hold onto your butts!"
Here are few challenging, encouraging, and butt-kicking quotes from Charles Spurgeon on the Gospel of Jesus Christ.
"Never lose heart in the power of the gospel. Do not believe that there exists any man, much less any race of men, for whom the gospel is not fitted." - CHS
"Avoid a sugared gospel as you would shun sugar of lead. Seek the gospel which rips up and tears and cuts and wounds and hacks and even kills, for that is the gospel that makes alive again. And when you have found it, give good heed to it. Let it enter into your inmost being. As the rain soaks into the ground, so pray the Lord to let his gospel soak into your soul." - CHS
"Let this be to you the mark of true gospel preaching - where Christ is everything, and the creature is nothing; where it is salvation all of grace, through the work of the Holy Spirit applying to the soul the precious blood of Jesus." - CHS
And my personal favorite of the day:
"The heart of the gospel is redemption, and the essence of redemption is the substitutionary sacrifice of Christ." - CHS