Saints in Heaven are Not Intercessors
Behold in this Gospel (Matt 25:11-13) Christ calls all Christians in a body a spouse or bride. And He is the Bride-groom. Here there is to be no mediator. ... No mediator is necessary, but we should go to Him ourselves with a confidence as complete as that with which any beloved bride ever went to her gracious and friendly spouse; for Christian faith makes Christ the Bridegroom, and I am the spouse.
What Luther Says - # 3994 - p. 1252