These modern blind teachers of the blind have a very false understanding of what is meant by a spiritual body. They have based their conclusion on the statement that Paul makes that the body is raised a spiritual body, and that flesh and blood cannot inherit the kingdom of God.
They cannot conceive in their minds a body raised from the dead, being composed of flesh and bones, quickened by spirit and not by blood. When Paul spoke of the spiritual body he had no reference at all to the spirit body and there they have made their mistake. They have confused the spiritual body, or, in other words, the body quickened by the spirit, with the body of the spirit alone. They think that those who believe in the resurrection of the literal body believe that it shall be raised again, quickened by blood, which is not the case. . . .
After the resurrection from the dead our bodies will be spiritual bodies, but they will be bodies that are tangible, bodies that have been purified, but they will nevertheless be bodies of flesh and bones, but they will not be blood bodies, they will no longer be quickened by blood but quickened by the spirit which is eternal and they shall become immortal and shall never die.
(Joseph Fielding Smith, Conference Report, Apr. 1917, pp. 62–63)