How does the Old Testament relate to the concept of Jesus as the way?

Throughout the Old Testament, there are numerous types and shadows that point to Christ as the way. For example, Isaiah 40 proclaims a voice preparing the way of the Lord, which alludes to John the Baptist's message in the New Testament. Additionally, the restrictions around approaching the Tree of Life in the garden illustrate the need for a mediator to access eternal life, fulfilled perfectly in Jesus Christ. This continuity shows the unified message of the Bible: that from Genesis to Revelation, God’s plan of salvation highlights Christ’s role as the exclusive and final way for His people.