In the work "Ecclesiology," the famous Greek true Orthodox theologian and preacher of the second half of the last century, Alexander Kalomiros, shows what is the fundamental difference between the Church and earthly organizations, talks about its tragic fate in the 20th century, predicts its future. "The true Church of Christ in Greece, Russia, all over the world has broken free from the suffocating embrace of a world that has always been an enemy of God. Having fallen for the bait of forces and authorities, which in these last times offered her their tyrannical friendship, she broke out, bloodied, wounded, bearing the scolding of Christ and the ulcers of His Body, but always alive and ready for struggle."