Many have Descended into the Deep, not So as to Walk on It...
Many have descended into the deep, not so as to walk on it, but so as to be by its bonds restrained. Jesus alone walked on the deep, where there are no traces of walkers, as a free man. For He chose death, to which He was not subject, that He might deliver those who were the bondslaves of death; saying to the prisoners, "Go forth; and to them that are in darkness, show yourselves." 
With which, also, the things which follow are consistent.