Christ: An Old Testament Prophet
Old Testament prophets had two modes: a call to repentance and speaking obscurely and in parables. This exactly follows the pattern of Y'shua's ministry.
His Name Shall Be One
Zechariah writes, 'On that day the Lord will be one and his name one.' What might that mean?
Israel is God's Firstborn
Symbolically, the firstborn represents a link between one generation and the next. In Exodus, that intergenerational link is broken by the tenth plague. Thus the Egyptian system is cut of and God's firstborn carries His Word and ways to the rest of the world.