User blog comment:Epakrios/Plot holes/@comment-6637171-20140119112655/@comment-5619706-20140119141247

Not just for Sam, but for us viewers, too. Zachariah looked like his vessel in Heaven. So did Rachel and other vessels. Naomi, who we always saw in Heaven, appeared as she was later when she went down to Earth, without explicitly showiing any need for a vessel (yet finding one that looks like her).