The Greek church did not want to be Jewish. This is well-known and the topic of the debates in Jerusalem.
Paul himself said he limited his teaching:
1Co 2:2 For I determined not to know any thing among you, save Jesus Christ, and him crucified.
The arrogance of the Greek church is evidenced early even as the leader in one church excluded John:
3Jo 1:9 ¶ I wrote unto the church: but Diotrephes, who loveth to have the preeminence among them, receiveth us not.
3Jo 1:10 Wherefore, if I come, I will remember his deeds which he doeth, prating against us with malicious words: and not content therewith, neither doth he himself receive the brethren, and forbiddeth them that would, and casteth [them] out of the church.
By 400 AD all Jewshness was removed from the church by Constantine in the east and Augustine in the west.
Augustine even said that the Septuagint was more reliable than the original Hebrew texts.
As a result, modern theologians, trained within the Greek church, admit that they cannot reproduce the exegesis of the NT authors. Some are still so arrogant to say that if Jesus and his apostles were in their Hermeneutics 101 classes they would fail for misapplying scripture.
As a result, the church is void of the rich Hebrew nature of the scriptures. They even missed the plain teaching of the Bible, which is love; even of our enemies.
A willingness to murder "heretics" shows that they did not understand the very basic principles which were taught. According to Paul, one who does not understand this basic principle has no business teaching doctrine:
1Co 13:1 ¶ Though I speak with the tongues of men and of angels, and have not charity, I am become [as] sounding brass, or a tinkling cymbal.
Take a simple teaching like the parable of the Mustard seed:
The parable of the mustard seed is taught this way by the Greek church: The kingdom starts off small and grows larger and larger. If we have faith like that we can do miracles that no one seems to be able to do (move the mountain to the sea.). We argue if the birds are angels, demons, or gentiles. Then we wonder, and or defend, that Jesus said it was the smallest seed, when everyone else knows its not. This is NOT biblical preaching!
Hear the WORD of the LORD!
Jesus was the seed of the woman in Genesis. He was the least of all the seed because he served us all through his death on the cross. The word for mustard in Greek is similar to 'bruised by anger' in Hebrew. The prophecy of the seed of the woman speaks of his incarnation, kenosis, tribulation, temptation and final obedience on the cross.
He grew to be the great herb. The grass was given to cattle to eat, and the herbs were given to men to eat. The greatest thing men can eat is the body of Christ. He is the great herb. Eating is a metaphor for learning, so he became the great teacher. We also celebrate the cattle eating the grass when we put baby Jesus in the manger with the grass. We have the same symbol of eating his body at the beginning of his life as we have at the end.
The tree is the cross... and those birds? If you live in the spirit you rest in the cross.
Lets move a mountain. The two mem's in the Hebrew word for water have metaphoric meaning for the Father and the Son. The Father is Spirit and the Son is Truth. Jesus told the woman at Sychar that though she worshiped on the mountain, she would worship in Spirit and Truth. The mountain would be moved to the water.
The parable of the mustard seed speaks of Christ at every turn and is revealed by the word itself. The parable contains a riddle:
Eze 17:2 Son of man, put forth a riddle, and speak a parable unto the house of Israel;
It is easy to assume that those with whom you disagree are simply ignorant. Those who do so are using themselves as the measure of truth.