Please consider with us why this claim is made. Christ is not divided. Our Lord did not work against His own prayer for unity by establishing conflicting and contradictory denominations.
Denominationalism breeds skepticism and doubt.
Different doctrines cause many to lose respect for the Scriptures. Others in any place who do the same thing will be, like us, Christians only. It has no denominational founder. It has no denominational head. Christ is the Sovereign Head of the church.