The meaning of the sentence is that the character feels although killing the bear has made him/her feel bigger and that they have grown since this act, the effect this has on the understanding of the event's significance is that the reader will conclude that after the event the character has grown or the character will feel that they have matured or gotten older.
erkan is upset because no one believes he has been robbed. erkan is quite angry but he is mostly harmless. erkan is incoherent and won't listen to reason
The theme that can be identified from the above stanza
from “The Soldier” by Rupert Brooke is that even when the soldier died, he will
always be a part of peace and freedom that the England has attained after the
war. His death will not go in vain.