In the book of beginnings, Genesis, Jesus is introduced to us with the Father and the Holy Spirit, as co-creator of heaven and earth. He is the seed of the woman who bruised Satan's head.
In Exodus, He is the Paschal Lamb, whose blood was sprinkled on the lintel of the Israelites' houses, averting God's judgement and securing their salvation from Egyptian bondage. By implication, His blood secured both our salvation from sin and eternal salvation in heaven.
In Leviticus, He is presented as the Lawgiver and the High Priest who pleads our cause before God and makes atonement for our sin with His precious blood.
In Numbers, He is portrayed as the Serpent of Brass lifted up in the wilderness for the Israelites bitten by the fiery serpents to look upon and me saved.
He is the Pillar of Cloud by day and Fire by night providing guidance through the wilderness journey.