in whom My soul delights: God used similar words at the baptism of Jesus (Matthew 3:17).
I will put My Spirit on Him: Any leader might be called a servant, but the Spirit's presence suggests a king from David’s line or a prophet like Moses (see Numbers 11:17, 24–29).
Establishing justice is a king's duty (see Isaiah 9:6–7; Psalm 72:1).
This king’s mission will extend beyond governing Judah to a greater mission for the nations.