Christ is divine. Christ is human. What does that mean? It means that we can trust his salvation is based not only on the side of God but the side of humanity. In large part, it is what the apostles and Christians would have to come to terms with as they wrote the rest of the New Testament. What has Christ done because of his humanity and divinity that no one else can do becomes the question. In the en, the salvation he offers is far superior to anything else that is offered.
On the divine side, we know the salvation that is offered through Christ truly is a divine plan that God accepts. Christ understands the side of God that is encapsulated in holiness as reflected by the Law of Moses. Christ understands divine perfection perfectly because he is divine perfection. On the side of God, Christ can mediate because he was without sin before the law and blameless before it.
On the human side, Christ can bring the truth of this to humanity but understand fully the need for grace. He understood temptation as we understand it and knows our human side is good but out sinful side is bad. He knows what it is to be human so he can represent the side of humanity in salvation.
It is this divine-human nature to Christ that allows John to say – ‘to them he gave the right to become sons of God”. It is not a legal salvation that God offers but an ultimate end of being a part of God’s family. God forgives us, transforms us and ADOPTS us as his own. It is the fact we go from being God’s enemies to his servant to his sons and daughters is the progression that is only possible through salvation in Christ. No other salvation offers this and it is because Christ is both fully divine and fully human.
If there is one group of people then who should know the joy of Christmas is it those who have been adopted of Jesus Christ. It compels us to smile as we view every nativity scene.