This article looks at the supremacy of Christ, especially in the book of Hebrews. The author also looks at the new covenant as being better than the old covenant (relation Old Testament and New Testament): it is more inclusive (it includes Gentiles); it has a better Mediator; a better High Priest; a better King; and a better revelation of God.
The whole Bible speaks of God’s love. As Mediator of the covenant, Jesus Christ demonstrated such awesome love for his people that he suffered the most ignominious death, in order that we might live. However, he is also the Messenger of the covenant. As the Messenger he is love, but he is also holy, righteous, and jealous. We must view Jesus with both of these perspectives.
Jesus is fully divine and man. This article explains the two natures of Christ.