Isaiah 42:1-7

Isaiah 42:1-7
The Servant of the Lord
1 "Here is my servant, whom I uphold, my chosen one in whom I delight; I will put my Spirit on him and he will bring justice to the nations.

May refer to many persons, but pointing to the absolute fulfillment, is Jesus Christ.
Referring to Matthew 3:17 "This is My Son, the dearly loved, in whom is My delight."
Jesus Christ, a son whom God delights in.

The Spirit is on Jesus, John 1:32-34
32Then John gave this testimony: "I saw the Spirit come down from heaven as a dove and remain on him. 33I would not have known him, except that the one who sent me to baptize with water told me, 'The man on whom you see the Spirit come down and remain is he who will baptize with the Holy Spirit.' 34I have seen and I testify that this is the Son of God."

He will bring justice to the nations. v2,3,4. Fulfilled in His second coming, when He reigns on His throne of justice.

2 He will not shout or cry out, or raise his voice in the streets.
3 A bruised reed he will not break, and a smoldering wick he will not snuff out. In faithfulness he will bring forth justice;
4 he will not falter or be discouraged till he establishes justice on earth. In his law the islands will put their hope."
5 This is what God the LORD says— he who created the heavens and stretched them out, who spread out the earth and all that comes out of it, who gives breath to its people, and life to those who walk on it:
6 "I, the LORD, have called you in righteousness; I will take hold of your hand. I will keep you and will make you to be a covenant for the people and a light for the Gentiles,
7 to open eyes that are blind, to free captives from prison and to release from the dungeon those who sit in darkness.

Jesus came as a servant, submitting to the Lord, by the authority and power from the Lord. A saviour to Gentiles, to free all from captivity, who those in the darkness.

John 1:3-9
3Through him all things were made; without him nothing was made that has been made. 4In him was life, and that life was the light of men. 5The light shines in the darkness, but the darkness has not understood[a] it.
6There came a man who was sent from God; his name was John. 7He came as a witness to testify concerning that light, so that through him all men might believe. 8He himself was not the light; he came only as a witness to the light. 9The true light that gives light to every man was coming into the world.[b]

Above is an example of the bible's one common theme. Jesus Christ as saviour, first a shadow revealed in Isaiah, and later the reality in John. Praise the Lord!