yeah now im a kafir i called god a man and it always amazes me that u question and answer urself. prophet showed us the way of making dua. ok got it! we do that. did prophet pbuh said make dua through sum dead person? answer that!
u knw asthiests also breathe y god doesnt stop their supply of air cuz they dont make dua?
i think u misunderstood the literary meaning of messenger. messenger according to all english dictionaries mean sum1 who delivers messages. jibrail was delivering god;s messages tp prophet pbuh not teaching him his own ways. naozobillah. now go and open english dictionary first.