Mormons are distinct in the emphasis we put on Gethsemane. We see Christ’s Atonement as having two primary lobes at Gethsemane in the garden and at Calvary on the cross.
As I understand it, a strain in Mormon thought says that the suffering for sins Christ did at Gethsemane came back to him again on the cross. True or not, this concept shows an disturbing grasp of the psychology of human misery.
You and I can bear a lot if we only have to bear it now, once and for all. We console ourselves that it will be over soon. In this concept, Christ was denied that consolation. He had to struggle to endure in the garden knowing that he could not say ‘It is finished’ at the end. He had to go with the soldiers viscerally knowing what was to come because he had just experienced it.