Martin Luther was a heretic and a tool of Satan.....
Now how do you know that? What doctrine points a finger at him as being from satan?
How do you know that Luther was not an instrument of God’s will to redirect the church?
Check out the link in Post 17.
"What doctrine points a finger at him as being from satan?"
1) The assertion that marriage is a State concern, not something God ordained
2) Throwing out seven books of the Bible, books Jesus Christ and the Apostles quoted from and never once said were in any way any different than the other books of the Bible
3) Scripture Alone which is clearly contradicted in Scripture
4) Faith Alone which is clearly contradicted in Scripture
5) Denial that there is a seperate priesthood when Scripture clearly teaches otherwise and warns us against falling into the heresy of Core as Luther taught and Protestants accept in spite of Scripture
6) Denial that The One True Church is founded on Peter
There's more but anyone who refuses to dig into those above isn't going to care about the rest any more than they care about anything other than defining their own version of Christ to suit their own version of Christianity.