For God so loved the world that he sent his one and only son that whosoever believes in him will not perish but have everlasting life (John 3:16)!
Jesus is both fully God and fully man. Obviously the precise “way” in which God accomplished this union is a mystery (1 Tim 3:16). While Christ’s two natures are taught in Scripture, the Biblical record only ever refers to Jesus Christ as a single person and he himself only acts and speaks as a single individual. Divine titles are used to refer to his human qualities and acts and human titles are used when his divinity (qualities or acts) is in view. In short, he has two natures (divine/human) united in one person forever, without confusion of the attributes.
While Christ’s death is a model of sacrificial service to God and love for people (cf. Phil 2:6-11), this is not the primary explanation of it in the New Testament. The primary explanation and summary of the multifaceted cross-work of Christ is to refer to it as vicarious atonement or penal substitution. This means that Christ’s sacrifice paid the full penalty of our sin by dying in our place. The penalty for sin is death and Christ completely paid that penalty on the cross.
Paul referred to Jesus as “our great God and Savior” (Titus 2:13). Just as Peter fell at Jesus’ feet and worshipped him (Luke 5:8) so we too should humbly worship the Lord and love him with an undying love (Ephesians 6:24). What do you think it means to worship Jesus Christ? Compare Mark 12:29-30 and Romans 12:1-2. What is God really looking for? See John 4:23-24; Mark 12:41-44.
What does it mean to serve a new master now instead of sin? How is Jesus a better master than the dictates and lusts of our previous life when we were without him (cf. Romans 6:12-13; Eph 2:1-3)?
There are those who deny the deity or humanity of Jesus Christ and thus they distort the teaching of Scripture on this matter. Almost always they begin with the presupposition that the incarnation is absurd or logically contradictory. This is simply false. There is nothing contradictory about asserting that Jesus is both God and man, that is, that he has two related, yet distinct natures. We have not said that his human nature was divine and human at the same time and in the same way, nor have we said that his divine nature is both human and divine at the same time and in the same way. This would be a contradiction. Rather, we are asserting that within the one person of Jesus Christ there are two natures, one human, one divine. Indeed, the biblical evidence, which we only lightly touched on above, demands this interpretation. Now, while the incarnation is not logically contradictory, the precise relationship between his divine nature and human nature is for the most part beyond our powers of rational explanation. Again, because we cannot completely explain it does not mean it is contradictory, it simply means we don’t understand it’s inner workings and dynamics very well. And here’s where we—along with the early church—joyfully cry out, “mystery” (1 Tim 3:16; Compare also Romans 11:33-36). In short, the incarnation must be both logically and existentially possible because scripture says it happened.
1 The Greek Old Testament, translated sometime between ca. 285 B.C. and 150 B.C., is often referred to with the Roman numeral LXX (i.e., “seventy”). Apparently this comes from a tradition which states that the work of translating was done by seventy two translators and completed in seventy-two days. This tradition seems to have had its beginning in the Epistle of Aristeas (2nd century B.C.) but is also found in Philo (Vita Mosis, 2.5-7.25-44), Josephus (Antiquities 12.2.1-15), and Justin (Against Heresies, 3.21.2). For more information, the reader is urged to consult Everett Ferguson, Backgrounds of Early Christianity, 2nd ed. (Grand Rapids: Eerdmans, 1993), 407-10.