[[Michael]] tells Dean this is in his bloodline – which is why he can also use [[John Winchester]] as a [[Vessel]].
'''==[[5.01 Sympathy For The Devil]]=='''[[Zachariah]] reveals that the [[Angel]]'s plan is for [[Michael]] to use would use Dean as his [[Vessel]] and kill [[Lucifer]] once and for all. However, dean Dean needs to give his consent to be the [[Vessel]].
==[[5.13 The Song Remains The Same]]==