Tom Saunders says:
>>We must consider that Tertullian had a change of heart and changed from
orthodox to gnostic. Therefor it is possible that much of what Tertullian
presented will be very different at different times.<<
Actually, he became a Montanist, who were more like modern Pentecostal
fundamentalists than gnostics.
Irenaeus quotes the Shepherd as scripture in _Against Heresies_ 4.20.2,
sometime between 182-188 CE. Tertullian, who speaks of the Shepherd politely
to make a point in _On Prayer_ Ch. XVI around 192 CE, and pointedly
disparages the Shepherd as the "scripture of adulterers" in _On Modesty_, Ch
X & XX, around 208.
While no one knows for sure when exactly Tertullian became a Montanist, it
is believed to have occurred between the writing of _On Prayer_ and _On
Modesty_. Actually, this change in tone concerning the Shepherd can be
treated as the "smoking gun" indicating the approximate period within which
this conversion occurred (i.e., 192 to 208 CE), because the Shepherd is
supposed to be anti-Montanist in tone (meaning, really, that it showed no
sign of "incipient fanaticism," not that it actually seems to have any
direct connection to known Montanist doctrines).
I just find it hard to see how a Greek speaking bishop of Lyons (in Gaul)
ends up being a front for the Latin speaking Tertullian, a lawyer of
Carthage (in Africa). Talk about a second career!
Cleveland, Ohio, USA