Rabindranath Tagore, in a poem who prays to the Lord not to remove all obstacles, asks for strength

Question

What do the underlined words in the following extract refer to?

Rabindranath Tagore, in a poem who prays to the Lord not to remove all obstacles, asks for strength to bear them. Before the start of the Mahabharata war, Arjuna was seized with emotional weakness. Therefore he refused to fight the war. But Lord Krishna rescued him by giving emotional strength. 

i. Who: .....

ii. Them: ..... 

iii. He: .....

iv. Him: .....

Answer 1

i. Rabindranath Tagore 

ii. obstacles 

iii. Arjuna 

iv. Arjuna.