First off, Pat Robertson never based his suggestion of taking down Chavez on his faith. He expressed a political view, not his faith, and did not use his faith to justify it.
Basically, he said it was pragmatic to take Chavez out, whatever that meant. Considering his stature, it was a dumb comment. Even if feels that way, he should not air it on TV because of his visibility and it could affect US relations.
Personally, I don't see the link between his faith and the suggestion at all. It was not a religiously motivated comment.