As far as those quotes regarding the bloody history of various so-called "Christian" churches, the conceptual "compromise" incident that inevitably led to all that bloodshed was the creation of the "Nicene Creed". The early church leaders really "sold their souls to Satan" when they adopted that creed (in exchange for an end to Roman government persecution and an opportunity to begin influencing and actually wielding Roman political power). It reads as follows: "We believe in one God the Father Almighty, Maker of heaven and earth, and of all things visible and invisible. And in one Lord Jesus Christ, the only-begotten Son of God, begotten of the Father before all worlds, God of God, Light of Light, Very God of Very God, begotten, not made, being of one substance with the Father by whom all things were made; who for us men, and for our salvation, came down from heaven, and was incarnate by the Holy Spirit of the Virgin Mary, and was made man, and was crucified also for us under Pontius Pilate. He suffered and was buried, and the third day he rose again according to the Scriptures, and ascended into heaven, and sitteth on the right hand of the Father. And he shall come again with glory to judge both the quick and the dead, whose kingdom shall have no end. And we believe in the Holy Spirit, the Lord and Giver of Life, who proceedeth from the Father and the Son, who with the Father and the Son together is worshipped and glorified, who spoke by the prophets. And we believe one holy catholic and apostolic Church. We acknowledge one baptism for the remission of sins. And we look for the resurrection of the dead, and the life of the world to come. Amen. " Notice that there is no mention whatsoever of God's commandment to love our neighbors as ourselves in that creed, nor any mention of the Kingdom of Heaven (a.k.a Kingdom of God) which according to Jesus would be compirsed of people who follow that commandment (and who, like Jesus, who would place no restrictions on their definition of neighbor). The Nicene Creed is like those "Christmans trees" you sometimes see when driving by at night that turn out to be nothing more than a pole with lights strung from the top to the ground. Figuratively speaking, they are both "all lights and ornaments"; there is no "tree of life" within them. Emporer Constantine, who never became a "Christian" until moments before he died, figured that Christianity was a religion that could help him hold his empire togther. He was correct in that regard, but he screwed up when he allowed (or ordered) those two key essential features to be left out of that creed. Not long thereafter, the so-called "Chatholic Church" began to spit into factions (each of whom defined "neighbor" differently and accused those who disagreed of committing "heresy"). Those unholy views eventually led to the division and demise of the Roman Empire itself.