These two chapters begin with an introduction of the Servant (Messiah) and His mission. Some scholars regard Isaiah 61:1-3 as a fifth Servant Song. [1] That the Servant of the Servant Songs is the same person as the Anointed One (Messiah) of chapter11 , is clear from what Isaiah wrote about Him. [source][source][source]
"The Anointed One now appears for the second time. As in the second Servant Song ( Isaiah 49:1-6), he speaks in his own person about himself and his God-given ministry." [2][source]