It is for us, as we contemplate on our Lord Jesus Christ. That is why the message of the Cross has to be preached every week to both believers and non-believers. Look at all the epistles in the New Testament; all of them contains detail concerning the Gospel message. Every single one of them, even the shortest one has to a certain degree.
There is no shame in preaching the Gospel of what Jesus Christ has done on the Cross at calvary. None at all. Do you preach or listen to it every Sunday? If not, what is a church gathering for?