Blame Paul.
Blame Paul for what? He is an Apostle....and Peter says we should listen to him....he also notes who will not enter the Kingdom of God in 1Cor 6....
Otherwise, where there is no spiritual understanding, and the Spirit himself speaks not through the preacher (though I set no limits to the preacher; for the Spirit can teach better than any Postills or Homilies) the end of it will be that every man will preach what he likes; and, instead of the Gospel and its exposition, they will be preaching once more about blue ducks! There are further reasons why we keep the Epistles and Gospels as they are arranged in the Postills, because there are but few inspired preachers who can handle a whole Gospel or other book with force and profit.As Luther told Zwingli
I do not ask how Christ can be God and man and how His natures could be united. For God is able to act far beyond our imagination. To the Word of God one must yield. It is up to you to prove that the body of Christ is not there when Christ Himself says, This is my body. I do not want to hear what reason says. I completely reject carnal or geometrical arguments Zwingli was the one who decided that human reasoning was enough to read the biblical texts. Zwinglis view on the sacraments has permeated Presbyterian and Reformatted attempts to rewrite the bible to fit human reasoning.
Luther believed that just as the body of Christ was necessary for salvation, so a physical presence of Christ was important for the Lords Supper. Luther saw Zwinglis ideology as one that denied Christs true humanity.
DCCLVII. I wish from my heart Zwinglius could be saved, but I fear the contrary; for Christ has said that those who deny him shall be damned. Gods judgment is sure and certain, and we may safely pronounce it against all the ungodly, unless God reserve unto himself a peculiar privilege and dispensation. Even so, David from his heart wished that his son Absalom might be saved, when he said: Absalom my son, Absalom my son; yet he certainly believed that he was damned, and bewailed him, not only that he died corporally, but was also lost everlastingly; for he knew that he had died in rebellion, in incest, and that he had hunted his father out of the kingdom.
Martin Luther, Table Talk Number 2387 a-b, as quoted in Frans Funck-Bretano, _Luther_, 1939, p.319
After three days of hotly debating with Martin Luther in Marburg the nature of the Eucharist, Huldreich Zwingli, the Swiss Reformer, gripped Luthers hands and said: Here were fighting. Doctor Martinus, but, thank God, one nice day we both will be dead and then in Heaven we shall know the Truth, walking with the great sages, with Socrates, Plato, Aristotle . . .
Doctor Zwingli, Luther interrupted him rudely, They were pagans; they were not baptized; they are roasting in the everlasting fires of Hell.
But they were good men, were virtuous and followed their consciences.
If you talk like this, youre not a Christianand I regret to have wasted my time with you, Luther snapped back