Shouldn't those people back in the day.. have known that this thing with the cross would happen? Sure, they were told.
Christ has promised that He is preparing a place for us (Jn. 14:1-4), and He's promised us that He will someday return. One day soon we will be together with our risen Savior. The Rapture of the Church will happen very soon. We must be ready, and help our friends get ready.
"He is not here; for He is risen, as He said" (Matt. 28:6).
But why should every believer go tell? Why should there be a sense of urgency with this? Cuz look around.. we are living in the last days. Cuz hell-bound lost people need to turn around a.s.a.p. and simply get found.. by God.
Why preach the Word? Cuz the Word doesn't return void without accomplishing it's purpose. Why share the Gospel; the message that we find in the Bible? Here's why.. we have no other message of power that transforms lives. Cuz more people are alive on this planet now, and the need is greater that it's ever been before. Cuz we were told to do this by our highest Authority, God.
Sure, Easter is all about dead dreams and dead people being quickened into life. It's about our living hope ..in this hope-lacking world. It's all about our once dead Christ living again so that He can raise people who are dead inside.
"For the time will come when they will not endure sound doctrine, but according to their own desires, because they have itching ears, they will heap up for themselves teachers; and they will turn their ears away from the truth, and be turned aside to fables. But you be watchful in all things, endure afflictions, do the work of an evangelist, fulfill your ministry." ~ Paul, (2 Tim. 4:3-5)