Read the following poem carefully and answer the questions that follow:
I love you, my gentle one;
My love is the fresh milk in the rubindi
Which you drank on the wedding day;
My love is the butter we were smeared with
To seal fidelity into our hearts
You are the cattle-bird's egg.
For those who say you are wealthy;You are the papyrus read of the lake;Which they pull out with both hands.
And I sing for you with tears
Because you possess my heart.
I love you my gentle one.
The predominant literary device used in the extract is