[He feels the resistance almost immediately, and the representation of him frowns as a result. Gabriel shouldn't be doing this -- they don't have time, and he only has one chance. If he fails this time, trying it again will be too risky. He really will rip himself apart in that case.]

The damage has already been done. I'm here, aren't I? If you don't come, it will all have been a waste.

[That should be enough to convince Gabriel, or so he hopes. The fact that he went this far should make it clear that the situation is a dire one, and there isn't any time for hesitation. His Grace reaches out again, trying to enfold Gabriel's more expansive one as best as it can.]

I'm... stronger than I used to be. When I was revived after the last time, it was with added power. [It's one more reassurance to prove that he can do this, that Gabriel can have faith in one of his siblings for once. Castiel isn't bringing him back to a good situation, but it's got to be better than this nowhere land.]