The high priest Jeshua and the other priests symbolized greater truths.
Servant and Branch are both titles for the Messiah, God's chosen one (Isaiah 42:1; 53:2; Jeremiah 23:5; 33:15). As a servant, the Messiah follows God's will by becoming a sin offering so that many can become righteous (Isaiah 53:11; see Acts 3:13; 4:27). The Branch is a metaphor for kingship, showing the Messiah as a descendant of David (Isaiah 11:1; Jeremiah 23:5).