He was the strongest of all living me/ at that time in this world / noble and huge
For your question, it is needed cite it. So the answer is Yes. The quotation should be followed by the author's name and a page reference in parentheses. It is for you to give credit to the author and to avoid from getting a plagiarized work.
In the midst of the street signifies the Kingdom of God where there is the tree of life or there is eternal life which has twelve fruits and is yielding every month. This expresses abundance in that place. The leaves of the tree were for healing which shows that in that place there is no sickness since there is continued health.
Sensible is the answer you are looking foe