First, take a look at this video:
For more details, see here:
Over 30,000 divisions?! Remember this warning from Jesus himself: “Every kingdom divided against itself is brought to desolation; and every city or house divided against itself shall not stand.” (Matthew 12:25) If his word is true, then the Church is useless. It has been divided against itself since at least 1054 AD, when there was a schism between the Roman Catholic Church and the Eastern Orthodox Churches. The leaders of the two factions actually excommunicated each other!