I understand how you could be confused. After his Incarnation he never lost his humanity. Think of the three people Jesus brought back to life. Where did their humanity go? Man is a composit of body and soul. The soul is the life giving principle of man. When we die our soul lives on but will be reunited to our bodies at Resurrection, and we become whole again.
The same with Lazarus. His soul was separated from his body for four days. Through the power of Christ, his soul was brought back into his body. The same with Jesus. His soul and his Divinity left his body at his death. But three days later his soul and his Divinity were reunited with his body. The difference between the case of Lazarus, and the other people Jesus ( and others in history who have been brought back to life ) brought back to life, and Christ’s Resurrection is that Christ arose in his glorified body, which is what you receive in Communion and is the way Christ will be in Heaven. Lazarus came back to life in his original material state and became a normal human being again.
In heaven we will see Christ as he appeard on earth, except we will be seeing his glorified body, and he will see our glorified bodies. At the same time Christ, in his Divinity, was always united to the Father and the Holy Spirit. In the same way, in Heaven, his Divinity will be united to the Father and the Holy Spirit. But his Divinity will remain united to his glorified body at the same time.
It was a very good question.
Linus2nd