True, but again the exercise is to go by one’s life and testimony. God has called us to be discerning and wise about things... if you reject the TRINITY, and say that Jesus never rose bodily then it is safe to say that you are not saved. Is it not?
Denying He rose bodily: fatal.
1 John speaks to this (denying He came in the flesh). Paul’s “mystery of godliness” in 1 Timothy states it in a hymn form “He appeared in a body...He was taken up in glory”. Integral to the Gospel!
Can’t say what Martin Luther Jr. did or did not believe REALLY. Hope he did, though.