“Crossing the Tiber” is an old expression describing what a Protestant does when he leaves the Reformation faith for the Roman Catholic fold. The Tiber River ran alongside old Rome; to get to Rome, one crossed it. Thus, “crossing the Tiber” refers to entering the Roman Catholic enclave. Today, descendants of our Reformed fathers gather on the banks of the Tiber River, preparing to cross.
Such a strong movement toward Rome is astounding, but should not be surprising. The simple reason so many are able to anticipate “crossing the Tiber” is that the doctrine in many Protestant, even Reformed and Presbyterian, churches has so warped and deformed that it is more like Roman Catholic dogma than Reformation truth (deformation in liturgy and ethics is close behind). Combine this doctrinal deformation with the doctrinal illiteracy of the common member—sound catechism instruction of the youth has long disappeared in most denominations—and the heavy traffic on the roads to Rome is not at all surprising.
—Read more in the upcoming editorial by Prof. Gritters entitled Gathering at the river in the upcoming March 1, 2018 issue of the Standard Bearer.