1) The kind of appeal that the writer seem to favor are both [emotion] (courage, love, patience & trust) and [reason].
2) Yes, the author convinced me to accept his position. It is already enough. As long as he is watching and prevents us from harm or danger, there's no need to worry and to be afraid.
3) The part that is convincing for me are the lines 1-4 because it emphasizes how God is always giving us comfort and relief whenever we are overwhelmed/ bothered/ depressed.