The external evidence (mainly the testimony of the early church) is the main difference between the two hypotheses.

We know from external evidence that Milton is clearly talking about himself at this point.

But external evidence of date seems to be entirely lacking.

This is the sum of the external evidence as to the phenomena.

Without external evidence of a transformation, other states had little or no reason to follow de Gaulle's lead.

The hypothesis of revision is supported by other external evidence.

But nothing can be said with certainty, for want of both external and internal evidence.

There is both textual and external evidence for this belief.

There is no external evidence of the author's identity.

Thus, the consideration of internal and external evidence is related.