There’s a verse in Colossians that reminds us of the ongoing (and never-ending) incarnate state of Jesus Christ. “For in Christ all the fullness of the Deity lives in bodily form” (Col 2:9).
Notice the present tense “lives.” Paul wrote those words about 30 years after the resurrection! This means that when Jesus rose from the dead and ascended to the Father, he did not discard his glorified body. The Son of God is forever the God-Man. He ascended bodily, and he will return bodily (see Acts 1:11).
The truth of Christ’s present bodily existence is the hope of our own resurrection at the return of Christ (1 Cor 15:20, 23, 49). If the Son no longer lives in bodily form, that would have tragic consequences for our hope of resurrection. Our hope of receiving a permanent glorified body rests on the reality that Christ himself lives in a permanent glorified body.
The Incarnation was not a temporary experiment or mission. The Word became flesh (John 1:14) and the Word remains flesh.