Go tell it to the Catholic bishop, St. Augustine, who was working out the doctrines of grace 1500 years before you were born.
What do you mean? Clarify.
Gee, that's pretty much a personal attack, isn't that prohibited in the Religion Forum?
If you wish to know the "doctrine" of grace, go back 2000 years and you will see that Jesus covered that just fine.
It's in the Bible.
Christians knew it just fine back then as they do so today also.