‘Jesus did not give up his human nature after his death and resurrection, for he appeared to his disciples as a man after the resurrection, even with the scars of the nail prints in his hands (John 20:25–27). He had “flesh and bones” (Luke 24:39) and ate food (Luke 24:41–42). Later, when he was talking with his disciples, he was taken up into heaven, still in his resurrected human body, and two angels promised that he would return in the same way: “This Jesus, who was taken up from you into heaven, will come in the same way as you saw him go into heaven” (Acts 1:11). Still later, Stephen gazed into heaven and saw Jesus as “the Son of man standing at the right hand of God” (Acts 7:56). Jesus also appeared to Saul on the Damascus Road and said, “I am Jesus, whom you are persecuting” (Acts 9:5)—an appearance that Saul (Paul) later coupled with the resurrection appearances of Jesus to others (1 Cor. 9:1; 15:8). In John’s vision in Revelation, Jesus still appears as “one like a son of man” (Rev. 1:13), though he is filled with great glory and power, and his appearance causes John to fall at his feet in awe (Rev. 1:13–17). He promises one day to drink wine again with his disciples in his Father’s kingdom (Matt. 26:29) and invites us to a great marriage supper in heaven (Rev. 19:9).
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All of these texts indicate that Jesus did not temporarily become man, but that his divine nature was permanently united to his human nature, and he lives forever not just as the eternal Son of God, the second person of the Trinity, but also as Jesus, the man who was born of Mary, and as Christ, the Messiah and Savior of his people. Jesus will remain fully God and fully man, yet one person, forever.’
Source: Wayne Grudem, Systematic Theology: An Introduction to Bible Doctrine, Part 4: The Doctrines of Christ and the Holy Spirit, Chapter 26: The Person of Christ, Explanation and Scriptural Basis, A. The Humanity of Christ, 5. Why was Jesus’ Full Humanity Necessary?, p. 468-469.
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