I am not sure exactly what you mean, but if you are talking point of view, this is first person point of view.
First Islam is a noun and means the religion of the Muslims, a monotheistic faith regarded as revealed through Muhammad as the Prophet of Allah. Another meaning is the Muslim world.
now signify is a verb and means be an indication of. Some synonyms are be evidence of, be a sign of, mark, signal, mean, spell, be symptomatic of, herald, indicate; literary betoken
The fearful trip is all about the journey of America during the Civil War. Whitman used this phrase as a figure of speech to express their experience during the war. The poem was dedicated to Abraham Lincoln after his death.
