You have to realize that Spencer W. Kimball’s book, The Miracle of Forgiveness, was written for LDS members. He’s talking to people who know about the gospel and choose not to enter into all the covenants — i.e. they deliberately choose not to marry, or not to marry in the temple.
And this matter how? Your statements are that these individuals - singles, spouses married to gentiles, etc can be exalted. Kimball denies that to be the case. You made it unconditioned for those to enter the covenants - just had to do their best. Can't have it both ways norm. Lots of single, temple recommend bearing, endowed mormons have died single - and by kimball's words - not qualified for exaltation.
Like PAUL and the ones he ADVISED against it?